Flash Erasing error 3310

Hello, i just got my 3310 and all the cables and stuff, so sorry if i ask stupid stuff
I flashed my 3310 from 5.57 to 6.39 and then to krazys software, all was fine and ok, ecept that the phone restarts once every 2-3 mins and i have nu network signal :|....
Tryin to flash it back to 5.57(thank god i saved the flash) i now get :
Flash Erasing error
Must receive 91 00 FF but received 11 00 FF
Check Vpp Vbat voltage, phone type

i cant charge my mobile now cos it wont start, is it because my battery is empty?
Thank you.

First you need to get the battery filled as the error message most probably came from that matter

As for the restarting phone issue, after flashing modded firmware to phone you must recalculate FAID using an MBUS cable and a Nokia Tool program (nokia's security procedure ;) )

use the search button as this is an old subject covered many,many times

cheers and good luck