Adds additional parameters to the STK500 initialization, which breaks existing versions of the ArduinoISP sketch which isn't expecting them. It is dependent on SWMIN version number reported by the programmer, but it checks against the OLD ArduinoISP version (18) instead of using a new version. (grr.)
This patch https://github.com/facchinm/avrdude/commit/3038a3bce9a05e27e3d876edc454ab835c489b9b#diff-53fea9d6d8c455cf68a521363ffacf2c
Adds additional parameters to the STK500 initialization, which breaks existing versions of the ArduinoISP sketch which isn't expecting them. It is dependent on SWMIN version number reported by the programmer, but it checks against the OLD ArduinoISP version (18) instead of using a new version. (grr.)
See https://github.com/arduino/avrdude-build-script/issues/11