Did you format the SD using the Corebook? Chuwi devices are very fussy about SD formatting. My Hi9 won’t recognize 128GB SD unless the Hi9 formatted it.
@hualalai, Yes, I formatted SD car using the corebook
@santi_sc I agree with you. Although corebook is a good tablets, the SD card reader is the poorest stuff in the tablet. Not only have the problem corebook, but HI10 plus and others have the same problem. It seems I know you from a Telegram Group, isn’t it?