I bought years ago a Tablet with dual boot, a Hi10 Plus, Model CW1527, with Docking Keyboard (from Hongkong, about 40.- eur) which still runs.
The MicroSD-slot doesnt work since long (does not recognize any MicroSD anymore) and later the Keyboard Docking Cover was not working neither, so I connected a HF wireless (no BT) Keyboard to MicroUSB, which works.
I rooted it successfully along this manual: TWRP 3.0.2-0
Three years ago (17.11.2020) I broke a bit the display, so the Touchscreen stopped working, which made it worse.
Still for some use-cases it is a good device (only Windows, Android I rarely use anymore, not enough ROM for Android and without MicroSD nearly unusable).
Now I found a ChuWi Hi10 Model CWi515 (with 2 x USB-A slots instead of C and MicroUSB).
I tried to connect my Keyboard Docking Cover from my old CW1527, but the two bumps doesnt fit to the tablet, they are too narrow together. I cut then some milimeter of the bumps, so now it fits, the contacts connect exactly I think, but the keyboard is still not working. Something is happening in Windows though, when I connect, the Taskbar is changing, but I cannot use the keyboard. OK, I dont know if the keyboard itself is broken or the CW1527. I thought it would be the contacts of the CW1527 but I can be wrong.
Is there maybe some software driver I would need?
Or where could I buy a original fitting docking keyboard for the CWi515?
I asked my colleagues they provided me with this drivers. Install them and see. But as the model is discontinued and we dont have more keyboards. They are aware of the problem of the connectors.Other users reported that years ago.
By the way, do you know if it is possible to repair the Android partition?
The new (old) CWI515 has no more Android on it, the pre-owner destroyed it by formatting the 12 GB partition (?) in Windows, I guess to get more storage space. Anyway, if I boot into Android, there is a message that it cannot start, I get some Recovery screen, where I cannot recover Android.
Is there a way, to restore the ROM on the partition?
I have the other ChuWi, that CWI527 device, here I can still use Android, from that I could copy the ROM maybe? But with which tool and how? Is it possible to boot the device with an usb-stick where I put Linux on it e.g.?
Possible? Could you ask your colleagues about that?
PS.: I guess (I read) to access the BIOS I need a wireless (not BT) keyboard (which I have) and press F7 while starting.
Yes, it is possible to restore the Android partition and use it, but keep in mind that it will be Android 5.1 and you will not be able to install a more modern version. In addition, to do this you would have to install Windows again since it is taking up all the storage space. Assess if this is what you want and write again if you want help getting it.
Thank! No, the Android partition is not unified with the Windows partition, it is a separate partition in the Disk Utility from Windows. I guess the previous owner formatted that partition for Windows to get more storage space.
So I think that I could try to restore the ROM to that partition with the tool.
I will try soon. Yes I know that it is only Android 5.1 but this is better than no Android. Most apps still run on 5.1