681 is the most stable OS for the 9000
1) Download
BBSAK 1.8
2) Run
BBSAK then click on
WIPE DEVICE, when asked to enter a password, leave it blank incase you don't have a password on your device.
3) Wait for a few seconds till you get the confirmation that it was done.
4) Now your device has no operating system and you should see a white screen on the BB
5) Download the following OS:
BlackBerry Handheld Software v5.0.0.1137 (Multilanguage)
Package Version: 5.0.0.1137
Consisting of:
Applications:
5.0.0.681
Software Platform: 5.2.0.64
File name:
9000M_PBr5.0.0_rel1137_PL5.2.0.64_A5.0.0.681_du.ex e
File size: 124.75MB
DOWNLOAD 5.0.0.681
6) Install the
*.exe file you just downloaded.
7) Navigate to
Computer >>> C: >>> Program Files >>> Common Files >>> Research in Motion >>> Apploader
8) Delete the file named
vendor.xml
9) Connect your BlackBerry through the USB port
10) Run
loader.exe
11) Follow the on-screen instructions and enjoy.
(Incase you were given 2 choices whether to leave the applications intact or to downgrade them to the original versions, choose the 2nd option which is to downgrade them, this will ensure you have a completely fresh installation)