Several Problems - 9300 - Rebooting / Error 601 etc

Question

I've had my Curve 9300 for about a year and it's started doing the following
1. Keeps rebooting at complete random intervals. Sometimes it can be on for a while and be fine, then it reboots. sometimes it reboots as soon as it recovers from a reboot. It also seems to reboot whenever i DO anything. If I delete an email it reboots. If I open something basic and it has to load something, it appears to fail doing so and reboots. 
2. The trackpad (which i've replaced) stops working now and then - the only thing it lets me do is press it down to select things. To get it working again I have to hold it down to bring the "select options" for whatever im hovered over, then fiddle around with it.
3. I've tried reinstalling an older OS for the phone, via instructions on this forum, but it still says I'm running the same OS I was before the reinstall (I deleted the Vendor.xml file before doing it)
4. Then I try deleting everything on the phone, and as soon as it gets to WLAN Profiles, the phone crashes saying "App Error 601 - Reset"
I'm at a complete loss what to do.
Please help!

Answer 1

Hello,
This KB discusses the 601:
KB23665 "App Error 600" or "App Error 601" is displayed on the BlackBerry smartphone
But, I would suggest you re-attempt the OS reload...something did not go correctly with that, given what you reported.
At the top of each device forum, there should be some "sticky" threads that discuss the OS levels available for many models. If they include your model, then please use those as reference as you proceed. Otherwise, you will have to dig through the official download portal for OS packages for your model:
http://us.blackberry.com/support/downloads/download_sites.jsp
From a PC, you can install any compatible (e.g., for your exact BB Model Number) OS package to a BB via this procedure:
http://supportforums.blackberry.com/t5/BlackBerry-Device-Software/How-To-Reload-Your-Operating-Syste...
Note that while written for "reload" and the Storm, it can be used to upgrade, downgrade, or reload any BB device model -- it all depends on the OS package you download and install to your PC. If that OS package is from a carrier other than the carrier for which your BB was originally manufactured, then delete, on your PC, all copies of VENDOR.XML...there will be at least one, and perhaps 2, and they will be located in or similarly to (it changes based on your Windows version) these folders:
C:\Program Files (x86)\Common Files\Research In Motion\AppLoader
C:\Users\(your Windows UserName)\AppData\Roaming\Research In Motion\BlackBerry\Loader XML
Be sure that you remove, from your PC, any other BB device OS packages as having more than one installed to the PC can cause conflicts with this procedure.
You may also want to investigate the use of BBSAK (bbsak.org) to perform the wipe it is capable of.
You may also want to try this procedure to perhaps narrow down the precise causal item:
Load your OS "bare bones"...if anything is optional, do not install it.
If the behavior presents immediately, then try a different OS with step 1
If the behavior does not immediately present, then run for as long as it takes for you to be sure that the behavior will not present.
Add one thing -- no matter how tempting, just one.
If the behavior does not present immediately, then again run for long enough to be sure it will not have the same problem
Repeat steps 4 and 5 until all things are loaded or the behavior presents
When the behavior presents, you know the culprit...the last thing you loaded.
If the behavior does not re-present, then you know that either step 1 or 2 cured it.
If the behavior presents no matter what, then you likely have a hardware level issue for which no amount of OS or software can cure.
If you are on MAC, you are limited to only your carriers sanctioned OS packages...but can still use any levels that they currently sanction. See this procedure:
KB19915How to perform a clean reload of BlackBerry smartphone application software using BlackBerry Desktop Software
Good luck and let us know!
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
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