Problem uploading bootloader on Mega2560

i decided probing my ArduinoISP programmer.i could upload sketches but when i wanted to burn back my Mega2560 bootloader i got an error that i attached below.Also my led 13 blinks.Something got wrong for sure.
As i said i can upload scatches but not my default bootloader back?
Thank you.

error.txt (9.22 KB)

Also ,just a few minutes ago,i burnt succesfully an Atmega328p bootloader.Why i doesnt't like the mega?

I don't know the answer, but maybe you would get a better response if you change the title to something relevant like "Problem uploading bootloader on Mega2560"

...R