Unfortunately I downloaded and installed the wrong firmware and it got stuck at the touch screen calibration stage, then I downloaded the correct firmware and tried to reupgrade it but the upgrade failed
and now the tablet is not even showing anything on its screen and my pc is not even detecting it.
So if someone has been in the same situation and could provide some help I would be very gratefull.
tool used is RKAndroidBatchUpgrade.exe
Model is A70HB
The battery charge indicator keeps red does not turn amber.
these are the last lines from the log file
11:59:17 484 <Layer:5-4> ┬┐┬¬├è┬╝├û├ÿ├å├┤├ë├¿┬▒┬©
11:59:17 484 <Layer:5-4> ├û├ÿ├å├┤├ë├¿┬▒┬©┬│├ë┬╣┬ª
11:59:17 500 <Layer:5-4> (Loader)├ë├¢┬╝┬Â┬Á├Ü├Æ┬╗┬¢├ù┬Â├Ä├ì├¬┬│├ë,┬Á├ê┬┤├¢├Å├é├ö├ÿImage
11:59:17 546 ┬Á├┤├Å├ƒ├ë├¿┬▒┬©<layer:5-4>
11:59:37 906 <Layer:5-4> Error:├ë├¢┬╝┬Â├è┬º┬░├£-Reset┬║├│┬Á├ê┬┤├¢Loader├ë├¿┬▒┬©┬│┬¼├è┬▒
11:59:37 906 Upgrade end,0 OK,1 Fail
12:00:17 625 RK2818 BatchUpgrade v22.214.171.124 Start Run
12:00:45 781 RK2818 BatchUpgrade v126.96.36.199 Start Run
12:00:48 109 ===========Image Version==========
12:00:48 109 Firmware Version:1.0.15
12:05:43 062 RK2818 BatchUpgrade v188.8.131.52 Start Run
12:05:47 421 ===========Image Version==========
12:05:47 421 Firmware Version:1.0.15