first i programmed the bootloader from atmel studio 7 then after that i tried to program from Arduino ide, packages are proper install but when i program and upload successfully code then controller doesn,t detect. currently using feather M0 board. and also tried restore bootloader with adafruit solution learn.adafruit.com/prope.... but doesn,t happen. Currently using Replica of Adafruit Feather MO made by myself.
When cross-posting, always give links between your threads - otherwise you waste peoples time posting stuff in one thread, not knowing that it's already been said in the other:
https://community.atmel.com/forum/samd21g18a-controllers-bootloader-delete-after-program-arduino-ide-0