Silly, I do not know when the system was I made 3G version, encountered a variety of problems, charging slow, electricity fast, card dead, the interface forced dead, want to retrieve the original system, the results found that the factory reset or the same system, the machine brush ROM Click Local upgrade did not respond, brush machine software is not supported (Brush Machine Wizard, Android Software Brush Wizard What is not crest matter, online about this tablet material is not much, only their own blind toss, fortunately the finished.
(for reference only, the consequences are at your own risk)
Get ready:
1, ROM files, download from the official website, address http://www.emui.com/plugin/hwdownload/download
2. recovery.img file, the boot recovery program of the ROM to be brushed, is similar to the "PE" system under windows, but it is not universal and corresponds to the corresponding ROM. It's hard to find it online, but you can actually extract it from the Update.app of the Rom file by
updateextractor tool: Https://pan.baidu.com/s/1hrTJvBe (password: s7a6)
Steps:
1, the extracted recovery files in the built-in storage space, in the mobile phone with brush recovery tools (such as tool-man) brush into;
2. Format the SD card, unzip the Rom file to the root directory of the SD card, and its file structure should be:
3. Insert the SD card--power-on-off------press and hold down the volume minus key +--Enter the brush interface and wait for completion
Attention:
1, to brush into ROM corresponding to the recovery file, otherwise unable to enter the brush machine interface, will only prompt "recovery image verify failed"
2, if you enter the brush interface, you may not find the Rom file, that is, the SD card can not be found, then you should format the SD card again or change the SD card
Reference : http://cn.club.vmall.com/thread-1182837-1-1.html