Originally Posted by kirrinjones
In my experience (I've done about 20 OS upgrades , small compared to some), What I have done is this:
1. Install the new OS and manually delete the vendor.xml file.
2.Backup my data using Desktop Manager (DM)
3. Backup my data using BlackBerry Swiss Army Knife (BBSAK)
4. Wipe my device using BBSAK.
5. Load the new OS using BBSAK. At this point I would select the modules that I wish to have installed on my BlackBerry (and I'm a minimalist)
6. Check all features and options of new OS.
7. Restore my data using DM.
8. Install my apps.
I believe each person would use a method that is appealing to them. My method for me is faster than using the DM to do the process. I get the OS wiped and installed much faster with BBSAK than using DM.
I do a double backup, because, well you never know.
Hope this helps
I have done 10+ OS upgrades. However, I am on a BES and the one time I did not use DM, but loader.exe instead, I had to have our IT guy send me a new password to get reactivated on the BES. While it is appealing to backup, delete and start from a clean BB, I seem only to get reactivated automatically when using my network computer and using DM to install. It does take a while to install the new OS using DM, and even longer to reinitialize on the BES, which, notwithstanding being connected to the network computer during the process, seems to reinitialize over the air.