I bought this Chinese tablet for my family - Chuwi Hi9 Air, His software really bad, very slowly.
the problem he came with Android 8 and not really been updated for a long time.
I found this guide online:
In fact, there is software or method to update Android 9 or other version in an informal way, do you recommend to use this guide?
I don’t understand that much in android system… and would like your help. Because i don’t know if its dangerous and I do not want and just afraid to completely destroy the tablet.