Solution: Fix 5.0.0.314 reboots on Bold!
 

2 out of 2 success rate so far!

1. Backup your SD Micro memory card to a folder on your computer
2. On the copy on your computer, delete all "BBThumbs.dat" files in all folders
3. In your BlackBerry, REFORMAT your SD Micro Memory card.
4. Copy your memory card contents from your computer back to the SD Micro memory card.

If you've got internal memory, do the same for your 1 gigabyte of internal device memory. Although that really can't be reformatted, you should be able to least delete the BBThumbs.dat files in this 'memory' too by accessing this in Mass Storage mode. Alternatively, you can temporarily set aside the memory card and use a different SD Micro card and reformat it.

I suspect RIM must have improved their filesystem scanner speed, and there's some stability bug in the filesystem scanner (and the .dat files appear to be some kind of fast thumbnail-index files on the memory card). It has happened before in varions versions of OS 4.6 likely because some optimized-performance thumbnails reader crashes when reading corrupted BBThumbs.dat files.

Besides, starting afresh actually improves the thumbnails performance after the initial lengthy scan. Also, your BlackBerry may be slow for a few minutes while the scanner is regenerating the BBThumbs.dat files in the background. But then you'll have a fast and stable BlackBerry afterwards.

Anyway, it seems to stabilize at least one cause of 5.0.0.314 random reboots.

it worked!!
(y)
my device keep rebooting every 30 min!! when i apply this method it's working fine (y)

Thanks

I just had to reformat my media card. thanks.

Update... I realized you can also reformat the internal memory too, in the new "Memory" screen of BlackBerry. So both the internal memory and the memory card can be reformatted. Reformat seems to work better than just using Mass Storage and deleting the BBThumbs.dat files directly.

Also, a clean install is also a safer bet (device wipe and install 5.0.0.314) as it solves other, different, possible causes of crash/reboots.

Just making sure all bases are covered, because 5.0.0.314 is really a good BlackBerryOS, and fire-breathingly fast when properly installed (about 2x to 5x faster than 4.6.0.230-4.6.0.260 range in my experience, including BlackBerry Browser, to things like application launching speed, etc.) It is almost as if RIM replaced the OS JVM, or did some mondo performance profiling & optimizing, or something.

Worked for me!

now if only this version.. was official !

I am experiencing issues with alarm clock not working. It would freeze when I go under menu> set alarm. I can manage to go back to other apps and after about 10 mins, it would then give me a unexpected exception message. Anyone else having this issue?

My alarm works fine.
Do you have any 3rd party apps that hook into the alarm or calendar? Try disabling those temporarily. A clean OS install may also help too.

Thaks for your suggest, i will do that (also i though bout this same).


i made today test with Benchmark magic on 5.0.0.314 and it shows

from:
graphics: 35.7 poly/s
CPU: 1325322 ops/s
Speed Index: 1361.0

to:
graphics: 35.7 poly/s
CPU: 1410743 ops/s
Speed Index: 1446.4


My buddy which returns to OS 4.6 has:

graphics: 14.7 poly/s
CPU: 975925 ops/s
Speed Index: 990.6

Different is huge!

Are you saying that your "from" results are using OS 5.0.0.238 and your "to" results are using OS 5.0.0.314?

Nope, im saying that my "from" & "to" results are using 5.0.0.314, i dont check on 5.0.0.238 :) But comparing to the OS 4.6 diffrrent is big. Beside OS *314 is much faster that *238, browser is better and loads pages faster, browsing pictures is more faster.

My bold still reboots...

Wirelessly posted

Mine too. Wiped. Reformated and still going crazy

How often are the reboots?

Secondly, you've already heard this, but you are using software that is not official, and by installing said software on your device, you take all the problems and risks that come with it.

Great.. after I read this post my Bold starts rebooting itself.. will have to try this fix now.

I've only had a couple of reboots but I will try this method. Thanks!

After do that, i noticed one restart.

Same as above. Has not restarted till this morning.. Will monitor it.

Following the instructions didn't work until I did a battery pull.. so far it's been staying on for about an hour..

Randomly rebooted twice since my last post.. I think i might revert back to 4.6 if this keeps up.