Over the weekend I found a bug in the checksum calculation in esptool2. It caused some images to have a bad checksum, which would then not be bootable as rBoot would think they were corrupt.
If you haven’t already please pull the latest source and rebuild it. Or if you are on windows and using an old pre-compiled copy you can get an updated version here.
One thought on “Important bug in esptool2”
please tell me how to use rboot to nodemcu-firmware.