listen...
you have a safety net!!!!!
do a Nandroid backup. and that is your safety net.
if anything goes wrong... you can restore it..
and be back to exactly where you were before.
get the Myn's Warm
[ROM] Myn’s Warm TwoPointTwo - [RLS 5 - 01/07/2011] - More Than Meets The Eye! - xda-developers
download the ROM.. dont worry about all the extra and themes.. till you are ready to try..
remember to nandroid backup before you try something.
Installation Instructions:
1. Download Rom and Radio/Wimax updates and place in the root of SDCard.
2. Reboot into Recovery.
3. Perform Nandroid backup
4. Minimally wipe dalvik and cache. For optimal experience, perform full wipe (data/dalvik/cache).
5. Flash the rom first.
6. Then the radio/wimax update. While the radios are flashing you'll see a little green arrow phone icon for a bit afterwords, Wait on this. You will then automatically be taken back to recovery.
7. Once back in recovery, reboot.
8. Enjoy
if your phone is purchased in 2011..
I dont think you need to worry about the radio/wimax updates.. so you can skip those steps.
again.. nandroid is your friend.
** if you do think you need to update the radio/wimax... stop.. do a lot of more reading!!!!!