hi!
several years ago there were some experiments. technically it is possible, but afaik it is VERY complex and needs complicated procedure + advanced coding skills.
i didn’t followed if there were any improvements in the last years with wired ethernet modules + arduino… but, with current tehnology, my best bet would be:
- a properly configured remote pc (raspberry, laptop, etc)
- esp8266 based board
- both connected to the same wifi network and internet
- access the remote pc via teamviewer and upload code ota to the esp
but this question is not really blynk related…