hi i flashed a v811 v8 firmware to my onda v811 v1 tablet. and now i cant enter recovery menu by pressing home+power button and it cant be reflashed with amologic flash program(USB-Burning-tool) either. the only way that i could enter recovery menu was Adb reboot recovery by using these methodd (How to Enter Recovery Mode on Any Android Phone or Tablet - Tutorial / Guide -> Method 2- How to Enter Recovery Mode on Any Android Phone or Tablet - Tutorial / Guide ) and this (How To Set Up Android ADB & Fastboot On Windows [Tutorial] | Redmond Pie - How To Set Up Android ADB & Fastboot On Windows [Tutorial] | Redmond Pie ). when i enter recovery using that method and try the menu (Apply Update from TFcard) and select update.zip after verifying the file it gives this error: assert failed: !less_than_int(1353131331, getprop("ro.build.date.utc")) installation aborted. i have tried with all the firmwares that worked fine and now i cant do anything. although my tablet works but its wifi dont work and its ram is now less tahn 300 mb(before it was about 600 mb). any help would be appriciated, thank you guys!