Use Arduino as ISP to reflash Atmega8 as USB-Serial

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after use, arduino uno clone has started throwing errors when plugged windows. getting device malfunction error.

i have googled topic days, , have not been able find instructions on how use (working) arduino have (mega2560) isp reflash atmega8 usb serial conversion on uno. have removed atmega328-p ic socket, , plugged in board receive same error. mac, linux or windows on different machines giving me error, not usb port on computer. can use mega fine.

i have tried reinstallation of drivers though issue seems atmega8 not working on usb side.
it metal objects came contact pins of atmega8. (i know tiny, when cutting wires...)

before checking board, or buying proper isp know if able use mega2560 isp reflash atmega8 usb - serial microcontroller on arduino uno default firmware arduino repo on git (arduino-uno-usbserial (i think))

thanks, links kind of instruction or advise on how achieve great!

regards,
chris



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