Can't update my iMac to 10.7.4, every method says file is corrupt.

I am somewhat new to Mac but I haven't had to post on this forum yet so I will try to be as clear about the issue as I can be.
I have an iMac (21.5 inch Mid 2011) and I am running 10.7.3 right now.
Software update informed there was an update available to Lion (10.7.4) so I tried to let it do it's thing and update it for me. The update downloads, then informs me that it has to restart to complete the installation. The progress bar after the restart shows it is working, and at the "Cleaning Up" stage, I am prompted with this message and only have the option to "Restart": The update "Mac OS X Update" can't be installed. The update could not be expanded, and may have been corrupted during downloading. The update will be downloaded and checked again the next time that Software Update runs.
I tried that method about 5 times, and kept getting the same thing. I read that I should try to download the .dmg files directly from Apple's site which I did. I downloaded the Combo client version and just the regular client version but when I try to open both .dmg files, I get "invalid checksum".
I did a disk utlity scan which came back to say that things were OK.
What can I do?

jdotmattinson is correct! I have the same issue.
It is a router/ISP issue. Tried the software update drop down for 10.7.4, failed. Tried to download 10.7.4 Combo Client update, invalid checksum. Tried to download 10.7.3 Combo client update, invalid checksum.
Went over to Win7 Dell laptop, downloaded 10.7.4 Combo update, transferred to MacMini via USB drive. Invalid checksum. WHICH led me to diagnose it wasn't my Mac, but Apple's servers or my ISP/Router.
Went to work, downloaded on XP, put on USB drive, brought it home, copied, installed just fine!
Did a hard factory reset on Motorola Surfboard SBG5560, invalid checksum again.
Going to buy a new router tonight and test it again with dowloading 10.7.4 Combo update. Will keep you posted to see if that fixes it.
Btw, if a new one doesn't fix it then it's my Comcast ISP service that is messing it up. Which is going to make me cry....check out this link... be afraid, be VERY afraid if this is the problem/solution.
https://discussions.apple.com/thread/2585612?start=75&tstart=0

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Linc Davis,
I have the same problem, and will post my panic report contents below... Any help is certainly appreciated.
Thu Nov 7 06:57:20 2013
panic(cpu 4 caller 0xffffff7f8b201fac): "GPU Panic: [<None>] 3 0 a0 d9 9 8 0 3 : NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0x102c00000 0xffffff8100805000 0x0e7150a2, D0, P1/4\n"@/SourceCache/AppleGraphicsControl/AppleGraphicsControl-3.4.12/src/Apple MuxControl/kext/GPUPanic.cpp:127
Backtrace (CPU 4), Frame : Return Address
0xffffff80ffce3af0 : 0xffffff8008e22f69
0xffffff80ffce3b70 : 0xffffff7f8b201fac
0xffffff80ffce3c40 : 0xffffff7f899f9cf8
0xffffff80ffce3d00 : 0xffffff7f89ac6e26
0xffffff80ffce3d40 : 0xffffff7f89ac6e84
0xffffff80ffce3db0 : 0xffffff7f89cf1f31
0xffffff80ffce3e20 : 0xffffff7f89aea011
0xffffff80ffce3e40 : 0xffffff7f89a00841
0xffffff80ffce3ef0 : 0xffffff80092ada80
0xffffff80ffce3f30 : 0xffffff80092ac522
0xffffff80ffce3f80 : 0xffffff80092ac5f7
0xffffff80ffce3fb0 : 0xffffff8008ed6aa7
      Kernel Extensions in backtrace:
         com.apple.nvidia.driver.NVDAResman(8.1.8)[3A2A3C2D-E129-3190-A682-E831B38F0FBF] @0xffffff7f899a9000->0xffffff7f89c13fff
            dependency: com.apple.iokit.IOPCIFamily(2.8)[447B4896-16FF-3616-95A2-1C516B2A1498]@0xffffff 7f89546000
            dependency: com.apple.iokit.IONDRVSupport(2.3.6)[86BA68C6-18DD-30A1-ABF6-54597AD6C277]@0xff ffff7f89999000
            dependency: com.apple.iokit.IOGraphicsFamily(2.3.6)[38E388A5-92D6-3388-B799-F2498E582287]@0 xffffff7f89956000
         com.apple.nvidia.driver.NVDAGK100Hal(8.1.8)[3CF8C2FA-83E6-39E3-A5B7-C7CC839B8C7 5]@0xffffff7f89c1e000->0xffffff7f89dcdfff
            dependency: com.apple.nvidia.driver.NVDAResman(8.1.8)[3A2A3C2D-E129-3190-A682-E831B38F0FBF] @0xffffff7f899a9000
            dependency: com.apple.iokit.IOPCIFamily(2.8)[447B4896-16FF-3616-95A2-1C516B2A1498]@0xffffff 7f89546000
         com.apple.driver.AppleMuxControl(3.4.12)[A4934A66-0E30-36E9-984A-650481102449]@ 0xffffff7f8b1f4000->0xffffff7f8b206fff
            dependency: com.apple.driver.AppleGraphicsControl(3.4.12)[661E3C87-5B97-3272-88FF-B9BA9B6E2 4ED]@0xffffff7f8b1ec000
            dependency: com.apple.iokit.IOACPIFamily(1.4)[045D5D6F-AD1E-36DB-A249-A346E2B48E54]@0xfffff f7f8a208000
            dependency: com.apple.iokit.IOPCIFamily(2.8)[447B4896-16FF-3616-95A2-1C516B2A1498]@0xffffff 7f89546000
            dependency: com.apple.iokit.IOGraphicsFamily(2.3.6)[38E388A5-92D6-3388-B799-F2498E582287]@0 xffffff7f89956000
            dependency: com.apple.driver.AppleBacklightExpert(1.0.4)[E04639C5-D734-3AB3-A682-FE66694C66 53]@0xffffff7f8b1ef000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
13A603
Kernel version:
Darwin Kernel Version 13.0.0: Thu Sep 19 22:22:27 PDT 2013; root:xnu-2422.1.72~6/RELEASE_X86_64
Kernel UUID: 1D9369E3-D0A5-31B6-8D16-BFFBBB390393
Kernel slide:     0x0000000008c00000
Kernel text base: 0xffffff8008e00000
System model name: MacBookPro10,1 (Mac-C3EC7CD22292981F)
System uptime in nanoseconds: 11367242923
last loaded kext at 8941821786: com.symantec.kext.SymAPComm          12.2f2 (addr 0xffffff7f8b30b000, size 20480)
loaded kexts:
com.symantec.kext.SymAPComm          12.2f2
com.parallels.virtualsound          1.0 22731.929773
com.Logitech.Control Center.HID Driver          3.4.0
com.symantec.kext.ips          3.5f2
com.symantec.kext.ndcengine          1.0f2
com.symantec.kext.internetSecurity          5.2f2
com.seagate.driver.PowSecDriverCore          5.1.1
com.apple.filesystems.autofs          3.0
com.apple.driver.AppleHWSensor          1.9.5d0
com.apple.driver.AudioAUUC          1.60
com.apple.iokit.IOBluetoothSerialManager          4.2.0f6
com.apple.driver.AGPM          100.14.11
com.apple.driver.ApplePlatformEnabler          2.0.9d1
com.apple.driver.X86PlatformShim          1.0.0
com.apple.driver.AppleMikeyHIDDriver          124
com.apple.iokit.IOUserEthernet          1.0.0d1
com.apple.driver.AppleHDAHardwareConfigDriver          2.5.2fc2
com.apple.driver.AppleHDA          2.5.2fc2
com.apple.iokit.IOBluetoothUSBDFU          4.2.0f6
com.apple.driver.AppleUpstreamUserClient          3.5.13
com.apple.driver.ACPI_SMC_PlatformPlugin          1.0.0
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport          4.2.0f6
com.apple.driver.AppleThunderboltIP          1.0.10
com.apple.driver.AppleIntelHD4000Graphics          8.1.8
com.apple.driver.AppleMikeyDriver          2.5.2fc2
com.apple.driver.AppleSMCLMU          2.0.4d1
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.AppleMuxControl          3.4.12
com.apple.GeForce          8.1.8
com.apple.driver.AppleBacklight          170.3.5
com.apple.driver.AppleMCCSControl          1.1.12
com.apple.driver.AppleLPC          1.7.0
com.apple.driver.AppleHWAccess          1
com.apple.driver.AppleSMCPDRC          1.0.0
com.apple.driver.AppleIntelFramebufferCapri          8.1.8
com.apple.nvidia.NVDAStartup          8.1.8
com.apple.driver.AppleUSBTCButtons          240.2
com.apple.driver.AppleUSBTCKeyEventDriver          240.2
com.apple.driver.AppleUSBTCKeyboard          240.2
com.apple.driver.AppleFileSystemDriver          3.0.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.BootCache          35
com.apple.driver.XsanFilter          404
com.apple.iokit.IOAHCIBlockStorage          2.4.0
com.apple.driver.AppleUSBHub          650.4.4
com.apple.driver.AppleSDXC          1.4.0
com.apple.iokit.AppleBCM5701Ethernet          3.6.9b9
com.apple.driver.AirPort.Brcm4331          700.20.22
com.apple.driver.AppleAHCIPort          2.9.5
com.apple.driver.AppleUSBEHCI          650.4.1
com.apple.driver.AppleUSBXHCI          650.4.3
com.apple.driver.AppleSmartBatteryManager          161.0.0
com.apple.driver.AppleRTC          2.0
com.apple.driver.AppleACPIButtons          2.0
com.apple.driver.AppleHPET          1.8
com.apple.driver.AppleSMBIOS          2.0
com.apple.driver.AppleACPIEC          2.0
com.apple.driver.AppleAPIC          1.7
com.apple.driver.AppleIntelCPUPowerManagementClient          216.0.0
com.apple.nke.applicationfirewall          153
com.apple.security.quarantine          3
com.apple.driver.AppleIntelCPUPowerManagement          216.0.0
com.apple.kext.triggers          1.0
com.apple.iokit.IOSerialFamily          10.0.7
com.apple.iokit.IOBluetoothFamily          4.2.0f6
com.apple.driver.DspFuncLib          2.5.2fc2
com.apple.vecLib.kext          1.0.0
com.apple.iokit.IOAudioFamily          1.9.4fc11
com.apple.kext.OSvKernDSPLib          1.14
com.apple.driver.IOPlatformPluginLegacy          1.0.0
com.apple.iokit.IOBluetoothHostControllerUSBTransport          4.2.0f6
com.apple.iokit.IOSurface          91
com.apple.driver.AppleGraphicsControl          3.4.12
com.apple.driver.X86PlatformPlugin          1.0.0
com.apple.iokit.IOAcceleratorFamily          98.7.1
com.apple.nvidia.driver.NVDAGK100Hal          8.1.8
com.apple.driver.AppleThunderboltEDMSink          1.2.1
com.apple.driver.AppleThunderboltDPOutAdapter          2.5.0
com.apple.driver.AppleBacklightExpert          1.0.4
com.apple.driver.AppleSMBusController          1.0.11d1
com.apple.driver.AppleSMC          3.1.6d1
com.apple.driver.AppleSMBusPCI          1.0.12d1
com.apple.nvidia.driver.NVDAResman          8.1.8
com.apple.driver.IOPlatformPluginFamily          5.5.1d27
com.apple.driver.AppleHDAController          2.5.2fc2
com.apple.iokit.IOHDAFamily          2.5.2fc2
com.apple.iokit.IOAcceleratorFamily2          98.7.1
com.apple.AppleGraphicsDeviceControl          3.4.12
com.apple.iokit.IONDRVSupport          2.3.6
com.apple.iokit.IOGraphicsFamily          2.3.6
com.apple.driver.AppleThunderboltDPInAdapter          2.5.0
com.apple.driver.AppleThunderboltDPAdapterFamily          2.5.0
com.apple.driver.AppleThunderboltPCIDownAdapter          1.4.0
com.apple.driver.AppleUSBMultitouch          240.6
com.apple.iokit.IOUSBHIDDriver          650.4.4
com.apple.driver.AppleUSBMergeNub          650.4.0
com.apple.driver.AppleUSBComposite          650.4.0
com.apple.iokit.IOFireWireSBP2          4.2.5
com.apple.iokit.IOFireWireFamily          4.5.5
com.apple.iokit.IOSCSIBlockCommandsDevice          3.6.0
com.apple.iokit.IOSCSIArchitectureModelFamily          3.6.0
com.apple.driver.AppleThunderboltNHI          1.9.2
com.apple.iokit.IOThunderboltFamily          2.8.5
com.apple.iokit.IOEthernetAVBController          1.0.3b3
com.apple.driver.mDNSOffloadUserClient          1.0.1b4
com.apple.iokit.IO80211Family          600.34
com.apple.iokit.IONetworkingFamily          3.2
com.apple.iokit.IOUSBUserClient          650.4.4
com.apple.iokit.IOAHCIFamily          2.6.0
com.apple.iokit.IOUSBFamily          650.4.4
com.apple.driver.AppleEFINVRAM          2.0
com.apple.driver.AppleEFIRuntime          2.0
com.apple.iokit.IOHIDFamily          2.0.0
com.apple.iokit.IOSMBusFamily          1.1
com.apple.security.sandbox          278.10
com.apple.kext.AppleMatch          1.0.0d1
com.apple.security.TMSafetyNet          7
com.apple.driver.AppleKeyStore          2
com.apple.driver.DiskImages          371.1
com.apple.iokit.IOStorageFamily          1.9
com.apple.iokit.IOReportFamily          21
com.apple.driver.AppleFDEKeyStore          28.30
com.apple.driver.AppleACPIPlatform          2.0
com.apple.iokit.IOPCIFamily          2.8
com.apple.iokit.IOACPIFamily          1.4
com.apple.kec.corecrypto          1.0
com.apple.kec.pthread          1

HT2292 gnature can't can't update new version of itunes due to error message saying invalid siupdate new version of itunes due to error messagecan't update new version of itunes due to error message saying invalid si saying invalid si

can't update new version of itunes due to error message saying invalid si

That suggests that the installer is getting damaged during the download.
I'd first try downloading an installer from the Apple website using a different web browser:
http://www.apple.com/itunes/download/
If you use Firefox instead of IE for the download (or vice versa), do you get a working installer?

When I try to update or download a newer version I get a box that says file is corrupt, why?

Everytime I try to download a newer version of Mozzilla Firefox it starts to download, then displays a run box, and when you push the run button, a box appears and says file is corrupt. I recently installed windows 7 and I have slow internet.

Any apps that she downloaded onto the device are tied to her apple ID. They cannot be transferred to another account. To update those apps, you would either need her password, or you could delete the apps and download them using your own apple id.

Can I update an iMac from another iMac using Carbon Copy Cloner?

I change office locations every 6 months and move to a similar iMac setup. At each move, using external hard drives, I update the "older" iMac HD with the current Mail, Addressbook, work files, etc. Currently, I am using Snow Leopard; the machine I am transitioning to is behind, using Leopard.
This time something new is before me, I purchased (honestly) the Snow Leopard upgrade for the iMac that I am transitioning to. So I have an OS upgrade plus a file plus a lot of application additions/upgrades.
The question is, can I use *Carbon Copy Cloner* to make an image of my current iMac and upgrade the 2nd iMac with all my recent applications in one fell swoop? I would

Arthur Levy wrote:
I change office locations every 6 months and move to a similar iMac setup. At each move, using external hard drives, I update the "older" iMac HD with the current Mail, Addressbook, work files, etc. Currently, I am using Snow Leopard; the machine I am transitioning to is behind, using Leopard.
This time something new is before me, I purchased (honestly) the Snow Leopard upgrade for the iMac that I am transitioning to. So I have an OS upgrade plus a file plus a lot of application additions/upgrades.
The question is, can I use Carbon Copy Cloner to make an image of my current iMac and upgrade the 2nd iMac with all my recent applications in one fell swoop?
Yes. Noondaywitch is correct. As long as the version of OSX is no older than the one the newest Mac came with, and the older Mac is compatible (enough RAM, etc), and the drives are formatted properly, you should be able to clone from one Mac to an external HD, then clone that back to the other one.
When you make the clone, boot up from it and run several apps, make sure your internet connection and browser work, etc.
Before cloning back to the other Mac, boot it up from the clone and do the same.
You may have to change a few settings for your internet connection, of course.

How can I update my iMac 2009 to be able to use apple tv?

I do have an iMac since 2009 and I have just now received the apple tv as a present, I found I cannot use airplay with my "old" iMac...
Any solution?
Can I update or install something into my iMac to be able to use apple tv?
Thanks for the support!

Several users have reported using an app called AirParrot for this purpose.

How can I update my imac g5 and I want to know how I can update it in 2014

I need to update my imac g5 but it's old so I need to know how to update it this year of 2014

The general assumption is that Apple no longer has OS 10.5 install disks. However, some people in the US have been able to get a copy by phoning the US Store at 1-800-MY-APPLE and asking for an operating system specialist, than asking for OS 10.5 install disks. Not a "sure thing" and the last ASC report of someone doing this that I've see was about 16 month ago. Still, it costs nothing to hear the word, "no," but you might get lucky.
Otherwise you are thrown into a miasma of confusing third-party offerings. Legitimate copies of old Mac OS software, especially 10.4 and 10.5 are in high demand and, as such, attract the scammers and the scalpers. I have seen legit copies of 10.5 offered for more than the market value of a used G5 iMac. Not worth it.
Try auction sites or Amazom but remember there are NO SAFE, LEGAL downloads of any Mac OS software. Some people will sell you a download license that doesn't exist. Another resource is a Mac Users group. Find one in your ara with this link:
http://appleusergroupresources.com/?s=apple+user+group+near+me
Gray disks from another Mac model will likely not work, and a gray disk that shipped with an intel Mac definitely won't. A full retail install Leopard 10.5 disk looks like this:

I can't update my iMac to OSX 7.10.2!!!

When I try to update my iMac to OSX 7.10.2 it doesn't work.

Thank you, I could download Mac OSX 7.10.2. But I have problems with iOS5. When you look at the Photo (sorry its on german). Thank you for Answers

HT1918 I can't update my apps, I keep getting a message that says my secuirty code is invalid.

My phone was working fine a few days ago. That I seen I had 7 updates and I went to update them. After entering my password I got a message that said Tap contiue and sign in to review billing info. I did as it says and then got a message that said my secuirty code on my credit card is invalid. I've checked it and it is not. I connected my phone to itunes and tried to change it that way with no change. While it was connected to itunes I erased the cc info all togther and tried to input a different credit card but it says the same thing that the secuirty code is invalid. I'm not sure what else to do. I can't update any of my apps, and I have been unable to find a number to call apple and see if they know how to fix this issue. Clearly there is nothing wrong with my secuirty code, so any help would be greatly appreciated. Thank you.

Is the address on your iTunes account exactly the same (format and spacing etc) as on your credit card bill : http://support.apple.com/kb/TS1646 ? If it is then you could try what it says at the bottom of that page :
If the issue persists, contact your credit card company and verify that they and any company they use to process credit card authorizations have the correct information on file.
And/or try contacting iTunes support : http://www.apple.com/support/itunes/contact/

I can't update my iMac to 10.7.2

I just got my iMac 21" a few weeks ago and I am trying to do the software update from 10.7 to 10.7.2. However, it won't install the updates.
It is saying "The update Mac OS X Update Combined can't be saved. The update could not be verified. It may have been corrupted or tampered with during downloading. The update will be dowloaded and checked again the next time that Software Update runs."

Try downloading and running the OS X Lion Update 10.7.2 Client Combo. You may also need to download and install the Lion Recovery Update afterwards.

How can I update my iMac 10.5.8 up to mavericks?

Okay so, I have an iMac OS X, bought it in 2006, and I wish to update it to Mavericks.
The problem I have, my Mac doesn't have the App Store, and the only way to get the App Store is to update the computer to Snow leopard. Do I really have to purchace Snow Leopardin order to get to Mavericks?
Please and Thanks

A 2006 model cannot run Mavericks. It can run Snow Leopard and Lion.
Upgrading to Snow Leopard
You can purchase Snow Leopard through the Apple Store: Mac OS X 10.6 Snow Leopard - Apple Store (U.S.). The price is $19.99 plus tax. You will be sent physical media by mail after placing your order.
After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store. Access to the App Store enables you to download Mavericks if your computer meets the requirements.
     Snow Leopard General Requirements
       1. Mac computer with an Intel processor
       2. 1GB of memory
       3. 5GB of available disk space
       4. DVD drive for installation
       5. Some features require a compatible Internet service provider;
           fees may apply.
       6. Some features require Apple’s iCloud services; fees and
           terms apply.
Upgrading to Lion
If your computer does not meet the requirements to install Mavericks, it may still meet the requirements to install Lion.
You can purchase Lion at the Online Apple Store. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
     Lion System Requirements
       1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,
           or Xeon processor
       2. 2GB of memory
       3. OS X v10.6.6 or later (v10.6.8 recommended)
       4. 7GB of available space
       5. Some features require an Apple ID; terms apply.

What can I update my imac Tiger 10.4.11 to?

I've been reading and it sounds like the best I can do is update the software to Lion and order additional 3 GB of memory - but is that enough to run Lion? Or am I better off just upgrading to snow leopard?   Also, if upgrading how do I do a backup or could I take imac to the local Apple Store and they could help? I inherited this imac and I love it but I know technical support, etc. has expired so not sure what help I can get?
Hardware Overview:
Model Name:          iMac
Model Identifier:          iMac6,1
Processor Name:          Intel Core 2 Duo
Processor Speed:          2.16 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache (per processor):          4 MB
Memory:          1 GB
Bus Speed:          667 MHz
Boot ROM Version:          IM61.0093.B07
SMC Version:          1.10f2

In order to get to Lion, you will have to upgrade to Snow Leopard first.
Your iMac 6,1 can only be upgraded to Lion.
Allan

Can I update my iMac running 10.6.8 from 32 bit to 64 bit?

Need to update to 64 bit in order to run TurboTax 2012. Can this be done? If so, how?

You have three ways:
1. Press 6 and 4 keys when your computer starts to boot with the 64-bit kernel-
2. Download Startup Mode Selector and select 64-bit > http://dl.getdropbox.com/u/992591/SMS/32-%20or%2064-bit%20Kernel%20Startup%20Mod e%20Selector.zip
3. Upgrade to OS X Mountain Lion

I still can not update my imac from 10.8.2 to 10.8.3 how can i uodate it?

when i click on update box the processs stops at 2.4 mb and it gets paused which the process takes 249 mb to be complete but it dosen,t change and stays at 2.4 mb , i tried even from support website >http://support.apple.com/kb/dl1640, with that when i start the updating it goes very slowly to 57 mb then all of the sudden goes backward to 0 . it seems something block the process and it dosen,t work . i live in middleeast and the speed of internet is not as fast as north america , could the problem be because of quqlity of or speed of internet ????? iam very frustrated

Navigate to: ~/libary/Preferences/com.apple.SoftwareUpdate.plist and drag the file to the desktop. Then restart the computer in Safe Mode and use Software Update to download 10.8.3 and then restart normally.
If you don't know how to get to the plist file noted above then:
Finder - Go (menu) - Go to folder and copy and paste ~/libary/Preferences/com.apple.SoftwareUpdate.plist in and hit Enter.

Can't update my Ipod with itunes 7.0.1.8, firmware file could not be found

When i click on the update button i get a message saying the ipod could not be updated because the firmware file could not be found. my internet connection is fine cause i can go to the itunes store. can anyone please help?

http://discussions.apple.com/thread.jspa?messageID=3123189&#3123189

Can't update my iMac to 10.7.4, every method says file is corrupt.

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