…This content is for 1-days, 7-days, 30-days, 90-day, 6 months, and 1year members only.Login Join Now Post navigationLENOVO THINKPAD X13 YOGA GEN 1 LBB-2 MB 19733-1 448.0JH04.0011 MAIN BIOS TESTED OK FSEKSY1 A4355A BIOS TESTED OK