This Boox is somewhat buggy. So, I really would like being able to update the firmware, but I can't do it. I get "package verify failed". The only "solution" I found on the Internet was removing the SD card. It didn't work for me. Also, my device has an unknown serial number. I would like to know if this is normal. The case has a number on the back. The firmware I'm trying to install is this:
https://drive.google.com/drive/folde...HlTZnYxcGs5Ums
https://ibb.co/isKNSU
https://ibb.co/b2qkgp
https://ibb.co/fwPp7U
https://ibb.co/cv9p7U
https://ibb.co/eABfE9