PlatformIO Community

Teensy 4.1 Uploading with JLink

might be interested in that if you get going, that’s soldering we can do!

A little update for anyone who comes across this. I was getting this error during upload

****** Error: Failed to prepare for programming.
RAM check failed @ addr 0x20001D8C.
RAM check failed while testing 0x7FF0 bytes @ addr 0x20001D8C.
Error while determining flash info (Bank @ 0x60000000)
Unspecified error -1

I found a suggestion to reset and halt before uploading and that seems to have fixed this issue. The new upload.jlink file is as follows:

loadfile .pio\build\teensy41\firmware.hex

I will also update the solution post to reflect this.