Bl301 injection, problems, help,

Congratulations! You are the first one hit this message!

If irmp can not decode it the bootloader will also not be able to. Maybe the easiest is to try another button or remote.

EDIT:
You can try to post your debug to be able to check what protocol it is:

echo 2 > /sys/module/rc_core/parameters/debug

Then press the button on the IR remote, like 3 times every second short press and upload your dmesg:

dmesg | paste