Upgrade Prestigio Grace 3157 16GB 3G PMT3157_3G_D_CIS to Android 8.1 Oreo
Download latest firmware Android 8.1 Oreo for tablet Prestigio Grace 3157 16GB 3G PMT3157_3G_D_CIS
The latest firmware android 8.1 oreo, starting upgrade from a PC with Windows 10/8.1/8/7/XP (this is a custom firmware for this tablet, you install it as is).
The driver of the USB and software to update the firmware of the tablet (run the .exe file for help on upgrading and starting the update).
Root firmware android 8.0.0 oreo (rip from original firmware prestigio grace 3157 16gb 3g pmt3157_3g_d_cis).
Update firmware for other Prestigio tablets.