How to change Katapult baud rate (reflashing)

[iwm911]

Hi,

i am using SB2040 with UTOC-3 to communicate to my RPI.

i successfully flashed the SB2040 with Katapult on a 1,000,000 Canbus speed. however i am getting timeouts on homing so i decided to try and flash it with a 500,000 canbus speed.

i tried to put the device into bootloader mode (flash_can.py -r) and then flash the katapult.uf2 firmware but i think it bricked my sb2040.

i can't get it to identify over CAN or USB (any help will be appreciated on that one).

what will be the right method for reflashing katapult to an already flashed sb2040?

Thanks

[iwm911]

i was able to reflash it using the mass storage trick of the RPI2040 (Plug it to Windows while holding the reset button and copy the firmware file to the new drive created)