I'm currently using a MECOOL M8S W rev 2.3 (2018_11_21) and with the twrp version that I manually installed, the system is not mounting the internal storage or sd card.
I can only see the USB OTG, but I'm unable to do backups.
I tried in flashing the unit with the m8s_pro_w_v0213 20190216 but USB burning tool won't pass 7%.
At the end, I just want to do a full backup
Thank you