Firmware password Solaris Sun Fire v440

UNIX Solaris
1

Hi:

I bougth an used Sun Fire v440, and It have a firmware password. When I turn on the server, it ask for firmware password. (I don 't know what is the correct password). I can access to SC, but when I want to access to OBP, Firmware Password appears again. I remove the battery for two hours, but, when I put battery again, the server still continues ask for firmware password. I need to remove the firmware password, to access OBP, and Install Operative System.

Any hint would be aprecated.
Regards,
Marcelo

PS: Sorry for my english

2

hmm the password is stored in the NVRAM (eeprom)
don't know if there is a way to reset them (or just replace the eeprom)