You Can Go Home Again.

I recently upgraded to ML on my late '11 MBP. I also have a previously purchased copy of Lion available to me in the Mac App Store and would like to revert back to Lion. Would it be as simple as downloading and installing Lion, or is there something I need to know before I continue?

If you try to install Lion 10.7.x over the top of Mt Lion 10.8 more then likely it will 1) Not install 2) Install and leave you with a Non Functioning computer.
You can not install and Older version of any OS over the top of a Newer OS. That is if when you are done you want a working computer.
The only time you can install any OS over the top of another OS is if the one you are installing is NEWER then the one that is on your system. Just like you did when you installed Mt Lion over the top of Lion.
As to you using the Mac App Store to install Lion on your Mac the only way to get to the Mac App Store is from within a version of OS X that contains the MAS link, That would be Snow Leopard 10.6.6 and higher, Lion 10.7 and higher and Mt Lion 10.8. So to even start the download from the MAS you would need one of those versions of OS X installed on your system. Since you now have Mt Lion installed if you try to install Lion without first erasing the drive Like I Said Before it will either 1) Not install 2) Install and leave you with a NON Functioning computer.
But hey give it a shot as you can always use the Online (Internet) Recovery HD system to then Wipe the drive and reinstall Lion. Because that is what you will have to do if you try to install Lion over the top of Mt Lion

Similar Messages

In the current screen keyboard shortcuts, it says you can use "home" and "end" to go to the top and bottom of the screen. But it only works if I use Cntrl. Why?

I am not using Firefox 20 on a new Sony Tap 20 with a wireless VAIO keyboard. All other keyboard shortcuts appear to work as usual. With my old computer, I did not have to hit cntrl to use home and end. (And yes -- I checked -- my num lock key is off.

You may have switched on caret browsing.
*http://kb.mozillazine.org/accessibility.browsewithcaret
You can press press F7 (on Mac: fn + F7) to toggle caret browsing on/off.
*Tools > Options > Advanced > General > Accessibility: [ ] "Always use the cursor keys to navigate within pages"
*http://kb.mozillazine.org/Scrolling_with_arrow_keys_no_longer_works
*http://kb.mozillazine.org/Accessibility_features_of_Firefox

Whenever you try to save a PDF file to a location other than the default location ('My Documents'), Firefox freezes & you have to go to the 'Task Manager' to exit Firefox and stop the error, so you can load Firefox again.

Whenever you try to save a PDF file to a location other than the default location ('My Documents'), Firefox freezes & you have to go to the 'Task Manager' to exit Firefox and stop the error. I have Windows XP (Media Center Edition) and all updates (Firefox, Adobe PDF, Microsoft, virus protection, etc) are installed. This has only been a problem since Firefox 4, and isn't a problem in Internet Explorer.

Hi David,
Thank you for your detailed question. It sounds like the real issue is pdf files. Are there any antivirus/firewalls that might be blocking this specific file type? or are there any preferences in your control panel that might be blocking this?
Do you have any stored preferences for PDF files in Firefox?
*[[Applications panel - Set how Firefox handles different types of files]]

Can you usb computer home share?

I have my new laptop that I just received today and I wanted to transfer my itunes library from my desktop onto my laptop. I know that you can wifi home share which is what I am doing at the moment but it is going to take a long time. I was wondering if I could use a USB cable between my desktop to my new laptop and transfer the library that way. I am assuming that the transfer rate would be much faster than over my home wifi connection.

If you connected the computers with an ethernet cable and switched off the wifi connection on the source computer forcing it to use the ethernet then that would speed up the Home Sharing Copying.
The reason i say leave the wifi turned on on the new computer is that some sort of check is made to apple for protected content to ensure that the destination machine is authorised. At least I think it does that.
Did not work for me with WiFi off did when it was switched on

What is the maximum number of Apple TVs (3rd gen) you can connect to 1 Mac running iTunes?

I have one Mac with my digital library running iTunes 11 and seem to be having problems keeping Apple TVs connected (via home sharing) when I get up around 10 Apple TVs on the network.
The Mac is running Mountain Lion with all software updates installed, iTunes 11, and the Apple TVs are all running 5.1.1 (the latest at this time).
I am not asking how many computers can authorize via iTunes to use the same Apple ID - that answer is 5. I have read in multiple places that the number of devices (e.g. Apple TVs, iPods, iPads - not computers) that can sync content to an iTunes account is unlimited, but I don't think that's entirely true.
I'd like to keep this conversation about the number of Apple TVs you can have home shared to a single Mac / iTunes library via home sharing.
I am also not asking how many a network could support via concurrent streaming, etc. That's not relevant. We only use 1-3 Apple TVs at any given time simultaneously, and streaming simultaneously to as many as 3 Apple TVs hasn't ever been a problem.
I recently upgraded all my Apple TVs in this house to generation 3 units - I have 12 of them in all, but once I connected about 10 of them I started having problems (at least I think it was 10).
Does anyone know the official limitation (if there is one) ?
The problem that I am having is that even though I have a great Wi-Fi N or wired gigabit connection at each Apple TV, and the correct home sharing Apple ID on each Apple TV and iTunes on the Mac, when I try to access "Computers" via the Apple TV menu, I get this error:
Could not connect to "My Library": Make sure the computer is on the same network as your Apple TV, the iTunes version is up to date, and iTunes is running.
Now if I restart iTunes, I can get the Apple TV I am currently troubleshooting to connect, but then if I go to a different Apple TV, it gives me the same error. Restarting Apple TVs doesn't fix it, only restarting iTunes seems to. But I can't seem to get multiple units to see the Library simultaneously.
Thanks to anyone who provides help on this.

Apple TV is by it self in a category.
With Apple TV 1 the limit was 5 Apple clearly stated that. The reason? Probably because the Apple TV 1 had a hard drive and was able to store content locally (quite a bit actually). This would make it more in line with authorized devices.
You authorized device limit is 5 but this does not pertain to home sharing again something different.
When you play content from an Apple TV you are streaming from an authorized device and as long as you have the same iTunes account on that Apple TV as the iTunes you are connecting to you will be ok.
Now to the error. I have also had this error and I had it on a network with only 1 Apple TV connected and it is since iTunes 11. It seems every time Apple updates iTunes it has a bad effect on Apple TV. So I would not relate this error to the number of Apple TV's you have, every time I get this error I restart the Apple TV and its fine again.
On a side not I used to run MANY Apple TV's off my xserver. I had my families homes networked with VPN. I would prefer to not say how many but it was quite a few. biggest problem there was multicast over VPN....whole other story.

TS3297 I upgraded my IPhone and lost some of my songs. I have tried everything the guide is telling me to do but have not hald any results. The other problem is because of this it won't let me down load any songs from my PC. If you can help me out Plzzz.

What can you do on your end to fix this problem??

Not sure if this helps:-
The music files, were they bought from your iTunes account or did someone gift them to you after buying from the iTunes account? If they are yours you can download them again if you clear or de-authorise the ipod, it has to be done by whoever gave you the ipod to do this (the registered owner). If they were bought for you on another itunes account I don't think Apple let you use them as they are copyrighted and they don't belong to you, they belong to the person who bought them. If the music files where ripped from music cd's then click and drag them to a new folder on your desktop and have the person who gave you the ipod to de-authorise and unregister it. Then you re register it and put your files back from your desktop folder in your iTunes folder and synch. Hopefully that would work. Any files which you did not buy, I would not know how get around this, best bet is to take it to you nearest Apple Store and explain that they were gifted to you and ask how you can use them. The best way to gift music files is to buy the gift tokens and give these. Hope above helps.

Hello, I just purchased a album and I could't download de digital booklet, how can I try again to download it?

Hello, I just purchased a album and I could't download de digital booklet, how can I try again to download it?

Hey ther Rafa Guti,
It sounds like you need to download the Digital Booklet that came with your purchase as it did not download correctly the first time. You can get it again from your purchased history with the following article. Depending on the platform you are downloading to, the instructions are a bit different so choose the correct steps from within:
Download past purchases
http://support.apple.com/kb/ht2519
Thank you for using Apple Support Communities.
Take care,
Sterling

So you can't add apps from your pc to a touch?

I deleted tap tap 1 cause I have tap tap 2 on my touch, but my brother wanted to play the first 1 again. Its not on my ipod but in the apps section on itunes but it wont go back on to it. is this how its suppose to be? Tap Tap 1 is now $0.99 and I got it when it came out for free. should I just tell my brother he is out of luck?
Any help

Log into your itunes account on your computer and download it again for free. Once you buy an App it's yours. You can download it again as many times as you need to.
But make sure your logged into the account that you originally downloaded it with.
Hope this helps

Yet AGAIN! "You can't open your current photo library using this version of iPhoto"

I have read every thread on this topic I could find in these forums, and tried most solutions, and I still can't get iPhoto to work.
Equipment: MacBook Pro June 2010, OS 10.6.8. Bought a Macbook Air February 2012, OS 10.7.2
Not sure why, but I can't open iPhoto. Here's what I have tried.
Original message on MBPro: "You can’t open your current photo library using this version of iPhoto".
1. Tried to rebuild library as per this thread https://discussions.apple.com/message/8429269#8429269. I get the list of checkboxes, but when I hit "okay" I get the same "you can't open your current photo library ..." message again.
2. Ran software update - no sign that iPhoto is out of date.
3. Copied new version of iPhoto from brand new MBAir to MBPro, replacing older version . Got same "you can't open your current photo library ..." message again.
4. Tried to rebuild library using new version of iPhoto - guess what - same message.
5. Downloaded free trial version of iPhoto Library Manager as suggested in the thread referenced above. The dmg loads to my desktop just fine but nothing happens when I click on it -- this has never happened before. Perhaps it is looking for iPhoto, which of course I can't get to work.
So I have been unable to access my old iPhoto library with (sob) thousands and thousands of family photos in it. I run TimeMachine on to an external hard drive every hour so I hope that if my iPhoto library is corrupted, there is a safe copy on that external drive ...
Between this hassle -- hours of time wasted -- and recent debacle of upgrading iTunes which erased my library and all of my playlists, which also took hours and hours to restore ... my 25 year devotion to Apple products is taking a major hit. I'm getting very weary of heart-pounding fear every time a new software upgrade arrives ... but that's a topic for another time. ;-)
Thank you very much indeed for all suggestions.

I'm going to start from scratch as the link you references is very, very old.
Try this: launch iPhoto with the Option key held down and try to create a new, test library and import some photos. If you are able to then the problem lies with your current library. If you get the same message then maybe the iPhoto application is the problem.
Try the following again: make a temporary, backup copy (if you don't already have a backup copy) of your library and apply the three fixes in order as necessary.
Fix #1
1 - delete the iPhoto preference file, com.apple.iPhoto.plist, that resides in your HD/User/Home()/ Library/Preferences folder.
2 - delete iPhoto's cache file, Cache.db, that is located in your HD/User/Home()/Library /Caches/com.apple.iPhoto folder.
3 - launch iPhoto and try again.
NOTE: If you're moved your library from its default location in your Home/Pictures folder you will have to point iPhoto to its new location when you next open iPhoto by holding down the Option key when launching iPhoto. You'll also have to reset the iPhoto's various preferences.
Fix #2
Launch iPhoto with the Command+Option keys held down and rebuild the library.
Select the options identified in the screenshot.
Fix #3
Using iPhoto Library Manager to Rebuild Your iPhoto Library
Download iPhoto Library Manager and launch.
Click on the Add Library button, navigate to your Home/Pictures folder and select your iPhoto Library folder.
Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File ➙ Rebuild Library menu option
In the next window name the new library and select the location you want it to be placed.
Click on the Create button.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments but not books, calendars or slideshows. The original library will be left untouched for further attempts at fixing the problem or in case the rebuilt library is not satisfactory.
If all of these fail there's one more option:
Start over from scratch with new library
Start over with a new library and import the Originals (iPhoto 09 and earlier) or the Masters (iPhoto 11) folder from your original library as follows:
1. Move the existing library folder to the desktop.
2. Open the library package like this.
Click to view full size
3. Launch iPhoto and, when asked, select the option to create a new library.
4. Drag the each subfolder in the Originals folder (iPhoto 09 and earlier) or the entire Masters (iPhoto 11) folder from the iPhoto Library on the desktop into the open iPhoto window.
Click to view full size
This will create a new library with the same Events as the original library but will not keep the metadata, albums, books slideshows and other projects.
OT

I uninstalled Firefox once, reinstalled it and it ran. I had a problem so I did it again. Now it will not run and I get an error message saying that firefox is running and you can only run one at a time. I can't figure out what is running.

Because of a problem, I uninstalled Firefox once, reinstalled it and it ran. I had a problem so I uninstalled/reinstalled it again. Now it will not run. I get an error message saying that firefox is running and you can only run one at a time. I have uninstalled multiple times and can't figure out what is running. The is only one Firefox installed and it is not open. What does this mean and how do I fix it?

If you use ZoneAlarm Extreme Security then try to disable Virtualization.
*http://kb.mozillazine.org/Browser_will_not_start_up#XULRunner_error_after_an_update
See also:
*[[/questions/880050]]

I open up yahoo and my messenger (no the full version) the one you can use in your mail. Now that I have opened I can't close it even though I hit sign out again and again. Please advise.

I am new to using a mac I have an older version. But I have used firefox on my pc before. I downloaded it and went to open messenger. Not the full downloaded messenger but the one you can access when in your mail on yahoo. It opened fine but now it won't close, even though I hit sign out again and again. I have tried force quite, uninstalling and reinstalling and still every time I sign into yahoo on firefox there is my messenger list open. For privacy issues I really need to be able to open and close it.

Known issue, our QA team working on it, See
* https://bugzilla.mozilla.org/show_bug.cgi?id=713014
you can follow the bug by opening bugzilla account and add yourself to CC list :)

I have home sharing enabled but still can't get my library to show up on my newly authorized computer, I have a lot of songs imported from CD's, never had to use itunes match or before, please help if you can

I cannot get my library to show up on my newly authorized computer, please help if you can.
I have home sharing enable on old computer and new one.
If I try to sync --I get the message that ipod can be synced w only one computer and if I sync with this library (which only shows new purchases from itunes) it will replace everything that is currently on ipod

Why can't the songs be transferred to the device? Is it because they are not authorized? Were these 25 tracks purchased/downloaded with the same account you have used to authorize the PC/new iTunes library?
Have you seen this article yet?
iTunes repeatedly prompts to authorize computer to play iTunes Store purchases
B-rock

HT5624 I WOULD LIKE TO HAVE MY PREVIOUSLY USED PASSWORDS CLEARED SO AS THAT I CAN USE THEM AGAIN. IT'S HASTLE THAT YOU HAVE TO CREATE NEW PASSWORDS THAT ARE HARDER TO REMEMBER THAN THE LAST AS YOU ALWAYS CHOSE SOMETHING EASY TO START WITH

It's a pain to have to keep thinking of new and more elaborate passwords simply because you're unable to re call one temporarily.
I'm signed into accounts most of the time and when I'm on another interface and can't recall or have access to my password then I'm forced to chose another. After a year and several situations like this I'm forced to create yet another non repeated password that only gets forgotton again from the fact it's something totally obscure to the standard passwords I use.
Can't passwords be returned to use after a period if so required by the account holder.

If you want to leave feedback for Apple then you can do so via this page (we are fellow users here on these forums) : http://www.apple.com/feedback/itunesapp.html

Can you still use Home Sharing?

     Can you still use Home Sharing?    I have a Mac Mini (10.6.3) a Ipad (3rd Gen.) and a 3rd Gen. Apple TV. All on the same home network and router. All three have Home Sharing turned on. All with the same account and all with the same password but they don't see each other. Since we're talking about three devices that don't see each other, I figure it must be something in the way I have it setup or Apple did away with the function.
     Can anyone point me in the right direction or shed some light on this problem.
     Thanks
          Ron   (hmbgeno)

Well I can tell you that Apple did not do away with it because I am still using home sharing. Maybe you should go through this support article.
Troubleshooting Home Sharing

When I use my IPhone 4S to view the Shaw Go Movie Central App when I am at home I only use WiFi which is automatic, I start watching a show and sometimes I will get a message like "you can not use your cellular for video playback" or something close to th

When I use my IPhone 4S to view the Shaw Go Movie Central App when I am at home I only use WiFi which is automatic, I start watching a show and sometimes I will get a message like "you can not use your cellular for video playback" or something close to that. Then I received an email from Telus saying I had used my 3G instead of Wi-Fi using 75% of my data. How can this happen when I'm on Wi-Fi at home? If it switched to 3G for some reason I should have been disconnected and not just transferred to 3G network using up my data. What is the fix for this??

It doesn't have to be that complicated, Verizon iPhones come unlocked, just tell VZ you're going on Holiday/Traveling and suspend the service, no need to pay for service if you're not going to be using it. Pick up local SIM cards in the countries of your choosing, pop them in, re-activate iMessage and you're set!
I recommend getting a SIM card from the Three network in England, they have great EU roaming rates and free like-home roaming in Italy.
Set your phone's region to match the country you're in, it'll save from some headaches when calling local/international numbers.
To answer your questions,
1. If you choose not to have a local SIM card, it is good to keep your phone in Airplane mode to save battery.
2. Make sure the two iPhones have different names to reduce sync/restore issues.
3. If husband has an iPhone also, you can chat with iMessage/Facetime, just give him heads up about the new number you'll have. Otherwise, use Whatsapp if he's got an Android. You can activate Whatsapp with your American number or the international number if you choose to get a SIM in Europe.
Also, Get the MagicJack app and/or Google Hangouts, both of those apps provide you with free calling to the USA and Canada using any internet connection. Google Voice is another good way to SMS across the seas.
Let me know if you need any more tips for iPhoning across the pond.

You Can Go Home Again.

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