[myTouch 4G Q&A, Help & Troubleshooting] syntropic:
This may "wreak of non-search" and I am sorry if it does. While I have searched, the overall panic that one experiences when you suspect a brick and cannot afford to have a brick.... (that, plus a friend purchased this Glacier for me to help me get back on my feet with respect to career/employment, etc., so a good amount of guilt is thrown into this mix)... all prevents me from rationally and methodically searching thread after thread to figure out why I am having the problem I am having.

I will be as precise as possible.

1. Back in Feb., I perm rooted with visionary... then about 2 weeks later, I read that this root was not true radio s=off perm root, so I used adb and the scripts to perm root again--using the wiki as a guide. Saved a copy of the partition 7 bin on my laptop as an added precaution. Also, BTW, I never flashed the engineering HBOOT. It didn't seem essential to do so... PLUS, in almost every guide it warned that this was the most likely chance for one to f*ck up and brick, so in the interest of erring on the side of caution, I skipped that.

2. I kept stock ROM for several weeks after that... just enjoying root and freezing bloatware with Ti, and doing other root-enabled mods... nothing too involved.

3. About 1 week ago, I finally decided to flash my ROM. I had Rom Manager (paid version), and had flashed ClockworkMod Recovery 3.0.0.5. Further, as an FYI, I had/have numerous nandroid backups on the SD, plus several Ti backups of apps/data... even sync'd this with dropbox, so I can access those now (which are not of any help obviously).

4. I first flashed a CM7 nightly build--wiped data and cache, and as far as I know followed the guides precisely. All was well...new ROM worked alright... some bugs, but it was nice to have the new features, etc.. And of course the mental gratification of having 2.3.3 (GB) instead of 2.2.1 (boring old froyo). I updated the nightly maybe 2 times... in each case, I simply flashed without backing up those ROMS or wiping data/cache as they didn't seem necessary, plus I still had all my stock rom nandroid backups on the SD.

5. Then Last night, RC4 came out. I flashed this the same way... no wipe. This morning... after using it for awhile, I started to get forced close problems on numerous apps... and the one that was most bothersome was my Market app... So after trying to Fix Permissions using RM to no avail.... I decided to restore the last nandroid backup of my stock (rooted) ROM. All seemed well while the restore was progressing... I was powered by AC (as always). But when the phone rebooted at the end of the restore, it stayed at the MyTouch splash for a long time... longer than I thought was appropriate (~20 minutes). So, I took out the battery since nothing else responded, and tried to boot into recovery. WHen I tried this, I got 3 quick vibrate alerts, and a blank screen, with the LED flashing every second in an ominous disconcerting way. (!!) Again, I removed battery, then tried to start phone again normally. Same problem.... It won't go past the MyTouch splash.

Since I cannot get into the phone... I am of course panicked... I have ADB on my laptop if needed, but I really am at a loss as to why this happened, and what I can do at this point....

Please, please advise. My utmost appreciation and sincerest gratitude in advance for any assistance. :(

Thank you!!!

syntropic