Download Android Oreo 8.0 stock firmware version 0702 for ALLDOCUBE M5 Phablet from here, here or here. Download Android Oreo 8.0 stock firmware version 0728 for ALLDOCUBE M5 Phablet from here, here or here.
Archive: ALLDOCUBE-M5(T1006L)-GMS-0702 / ALLDOCUBE-M5(T1006L)-GMS-0728
Model: ALLDOCUBE M5 T1006L Phablet
Image file size: 1.23 GB / 1.07 GB
Platform: Mediatek MT6797
Build number: full_x970_t10-user 8.0.0 O00623 1530336458 test-keys / full_x970_t10-user 8.0.0 O00623 1532700253 test-keys
Caution: Please do not update firmware unless you know what you are doing, you really want it or it is absolutely necessary. Firmware updates may occasionally have bad results, like bricking your device, temporarily or permanently. The firmware update process is done entirely at your own risk. Before attempting to update the firmware, back up your data.