X220T Bios Update. USB listed after F12 but will not update.

[ThinkCat]

Hi,

I scored an X220T i7 with a 'broken' screen that turned out to be a loose connector. I am now trying to upgrade its bios (2011 flavour) following the instructions from,

https://www.cyberciti.biz/faq/update-le ... stick-pen/

I have done this a few times on X220s and X230's

With the X220T I plug in the flashed thumb drive and hit F12 on start up. The drive is shown as an option in the boot menu but when I scroll down to it and hit enter I am just brought back to the boot menu. I've tried a few time and also tried reflashing without getting a different result.

The iso file from Lenovo is 8duj31us.iso

The battery is full and the charger is plugged in.

Any ideas?

[dr_st]

Possibly, the USB thumbdrive is not formatted/partition the way the BIOS expects it. Either it's legacy mode and requires UEFI, or vice-versa.

[ThinkCat]

Bingo! Thanks for the head shake.

I did check it in another X220 and then I checked that I had enabled user flashing under security on the X220T. The one I had missed was in the startup menu where it was set to UEFI only. Switched to legacy and slipped in the new bios.

Thank you.