How to burn bootloader at LGT ?

[herbkonik]

Hi all,
it seams i have demaged the bootloader at 2 of my boards, because it shows a unusual behavior and output if i upload a sketch:
The upload itself works, bord makes what is expected, but after upload the IDE shows a error message "can't verify upload, programmer is not responding".
Do you know where i can find the file for the bootloader?
And: Is it the same procedere as at the Arduino boards ? (I think so, just to make sure...)

[dbuezas]

Here's the tutorial: https://github.com/dbuezas/lgt8fx/blob/master/lgt8f/libraries/LarduinoISP/readme.md

[herbkonik]

Thank you very much