hope this bios help you bios_depot. LENOVO B590 working BIOS 20208 la58 mb 11273-1 48.4te01.011 USB flash drive: U6001 25Q64 8MB
LENOVO B590-20208 LA58 MB 11273-1 48.4TE06.011 25Q64CVSIG(U6001)_8MB 25Q32BVSIG(U6002) 4MB bios dump.bin