How to update AVR USBasp firmware to latest version
The common reason why you would like to update this firmware is unlock slow-sck function for cheap (e-bay or Aliexpress) USBasp programmers, like this one on the picture. The slow-sck function allows to program AVR chips running at very low frequency clock source (i.e. 128kHz). When your USBasp programmer prints that warning it means that firmware update is … Read more