Sofirn SP10 Pro (AA/14500/Andúril 2) - now available!

That AVR JTAG ICE adapter works pretty well, but it’s annoying to having to flash new firmware to the programmer and then needing to customize avrdude in order to use it.

For the past 8 months or so I’ve been using a different flashing tool, basically just a USB to Serial TTL adapter paired with pymcuprog (instead of avrdude). It works very well and those USB to Serial adapters are dirt cheap and everywhere. See here and here for a few more details. I had been talking with Sofirn about putting together a flashing kit with this, but that conversation seems to have gone quiet, as I think it was going through Lux-Perpetua.