Checksum : 013B 7607 Build Date : 05/27/1997 For TNB-5300 without Fax/Modem Flash Utility : upf1.com BIOS : A861.rom Update BIOS method : Step 1 : Restart System in Dos Prompt Step 2 : Run "upf1 a861.rom" Step3 : After update sucessful, power off system and power on again. Attention: Dont turn off power when the system is updating BIOS or short of power in the updating time.