Software For BlackBerry 8700c(AT&T)
BlackBerry Handheld Software v22.214.171.124 (Multilanguage)
Package Version: 126.96.36.199
Software Platform: 188.8.131.52
File name: 8700M_PBr4.2.1_rel155_PL184.108.40.206_A220.127.116.11_AT&T.ex e
File size: 61.77MB
Note: The Software Platform and Applications version numbers can be found under Options-About screen on the handheld.
Instructions for installing:
1. Make sure you have the latest version of Desktop Manager installed. It's 4.2 SP2.
2. Download the above file to the PC then install it to the PC by running the file you downloaded. (Choose the 8700c AT&T version)
3. Locate the vendor.xml file and delete it. It's located in c:\program files\common files\research in motion\apploader
4. Plug in BB and Open Desktop Manager. You should be prompted to upgrade.
The process takes about 45 minutes to an hour depending on how much data you have to backup and restore during the process. Once it's done loading the new OS it will reboot (it may do this twice during the entire process.) You will see a white screen with an hourglass for up to 20 minutes at a time while the DM says "waiting for initialization."
If you end up with a white screen with small icons and the number 507, simply connect to DM again and run application loader again and it should load the OS to the device.
(Previous 18.104.22.168 OS thread: Click Here
Edited Blackberry.alx below for adding all vendor themes. Simply replace your Blackberry.alx file with the one attached and run Application Loader again to install the themes.