Hey just FYI for anyone interested, I have a 10030*, was softrooted on 1.4.1, it auto-upgraded to 1.5 at some point without me noticing. I used the factory default reset procedure (disconnect wifi, hold power button 12 seconds, release 1 second, repeat 6 times, start up). This caused my nook to revert to 1.0.0.
After that I just downloaded the 2.5.1 update, renamed bravo_update.dat, copied to the external SD Card, followed update procedure (power off, hold down right-side >, power on) and it installed and worked perfectly.
Your mileage may vary, but it saved me all the complicated trouble in the above instructions. Use at your own risk, and don't throw your brick at me if that's what you end up with.
