I found this forum by searching the web for informations about my new (very old) jay-tech jay-pc tablet pid7901.
Eventually here i'll find some interesting knowledge about this nice little oldtimer.
I very much hope that we all will have a nice time.
I nearly managed to make "M70003_Slatedroid1.3[1.7.4_base].zip" work on my device by try'n'error-wise exchanging a few files from "M70003_via_WM8505_PID7901_128MB_Android.rar". Only the hardware-buttons were mixed up. but after trying to make z4root1.1, 1.3 and su-126.96.36.199-cd-signed.zip work the system bekame very unstable.