I’ve reinstalled bios 1.2 and got some results
Lua, lisp and Python works ok.
Wezterm still crash and reboot in a loop.
What would be the correct solution? A fresh rebuild with updated sdk?
I know for a fact wezterm works ok outside of the bootloader so the problem is in small details. It’s built in rust… 
Looks like the flash library wezterm uses is using the old flash API. So short of modifying that it’s not easily made compatible with a partition table.
Get the latest version! This is what I did to get it working:
Before v1.4.9, the MicroPython version used a python implementation for the keyboard. I did some research and confirmed the latest MicroPython uses SDK v2.1.1, so when I switched to Blaire’s keyboard driver, I had to add enable_interrupts (as mentioned by pelrun earlier in this thread)
uf2loader 2.3 with:
uLisp 4.7b
or
uLisp 4.8f, both running but acting bit strange…. Anyone have better experience?
I prefer using clockwork’s latest micropython 1.27.0 release to program on device but when I use it with this loader there is no cursor.