How to use thinkpad-ec on Nitropad bios

Nitrokey Generic
1

Hi,

I am trying to do this GitHub - hamishcoleman/thinkpad-ec: Infrastructure for examining and patching Thinkpad embedded controller firmware to enable usage for t420 keyboard change for my t430.

I have CBET4000 Heads-v1.4-6-gd46488a
but thinkpad-ec github page says i need BIOS 2.81 (G1ETC1WW) and EC 1.13 (G1HT35WW)

Does that mean there is no way for me to ec flash it unless I’m willing to go back to G1ETC1WW?

2

says here it can be ec flashed on G1ETC1WW and then possible to upgrade to coreboot

3

Yes, it is not possible with our firmware. You would need to flash back the old bios.

To be more precise: This might be possible under coreboot/heads, but it would need quit a deep dive which unfortunately nobody seems to has done till now

1 Like
4

I am currently on maximized CBET4000 Heads-v1.4-6-gd46488a.

i have a lesser concern about security right now and i just want to try to make the old keyboard work…

is it ok for me to do internal flash from nitropad heads to skulls or coreboot?
if yes… do i flash and top and bottom?

thanks

5

This is a good question to ask, it would be nice if they added this kind of info to their documentation.

Which rom to use for what and when, etc…

6

Hi, did you mange to make the keyboard swap working?