foolproof maybe, but not perfect.
mine got stuck on stage 3, I waited 1½h, then battery out.
the phone booted and I had the why so serious, and HBOT seems to be ok.
I'm new to the S-OFF thingy, I tried booting to my ROM (Lee 2.1a) but I got stuck on the last animated boot screen, I waited maybe 20min before I did two more tries (15 min this time) ok so my ROM is broken somehow, I entered recovery flashed update.zip
here while entering ClockworkMod recovery I saw a new message that I have not seen before.
"E:Error in DATA:data/recovery/log
(No space left on device)"
then I tried flashing the latest Lee ROM that I had on my SD card (2.2d) but that failed too

"ClockworkMod Recovery v2.5.0.7
-- Installing: SDCARD:LeeDrOiD_V2.2d_A2SD.zip
Finding update package...
Opening update package...
Installing update...
formating CACHE:...
Deleting files...
Deleting files...
Deleting files...
Copying files...
E:Failiure at line 9:
copy_dir PACKAGE:data DATA:
Installation aborted."
right now I'm restoring a backup from the 23rd. I hope it will work, or else I will be sad
edit: restoring from my backup worked

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