Hi, I am investigating the x60. It has 3 types: type 6xxx - 7JET30WW - (bios)1.15 type 1xxx - 7BETD8WW - (bios)2.19 type 2xxx - 7BETD8WW - (bios)2.19 There are two bios version. I have a x60 type 6363. type 6363 uses a TPM chip Does anyone know why there are two different types and if it possible to flash 7BETD8WW on a type 6363. ThinkPad X60 7JET30WW - (bios)1.15,(ECP ID)1.04 type 6363 7BETD8WW - (bios)2.19,(ECP ID)1.13 type 1706 7BETD8WW - (bios)2.19,(ECP ID)1.13 type 2509 7BETD8WW - (bios)2.19,(ECP ID)1.13 type 1702 BIOS: 7BETD8WW download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/7buj28us.exe Bios 7JET30WW download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/7juj13us.exe Thanks in advance, dCx