For those interested in programming adapters…
I just got a batch of programming kits made up, and most of them are spoken for and have been shipped out. This first batch required modification of the USB to Serial adapter (addition of a Schottky diode between the Tx and Rx lines) so they’re only sold as a full kit. I have a couple of these still available to ship out if anyone is interested.
Also, parts just arrived from a redesign. instead of requiring the USB to Serial adapter to be modified, this version runs both the Tx and Rx lines to the pogo pin adapter and merges them there. This allows you to use this pogo pin adapter with pretty much any off-the shelf USB to Serial TTL adapter without any modifications (* note: if serial adapter has an Rx LED, you will likely need to physically disable that). If anyone would like these, I can send them out as just the pogo pin adapter or as a full kit with a USB to Serial adapter and Dupont cables. If you already have a serial adapter sitting around, this is a cheap/easy way to do the flashing.