Note: this firmware is only fit for V4 model.
Check hardware version, please see the SN code 9,10th numbers on tablet back cover. Above picture is for your reference.
1, please download all packages.
2, before unzipping, exit the anti-virus software, or some programs will maybe deleted wrongly.
3, when unzipping, please select all packages together, and unzip synchronously. Don’t unzip one by one, it will cause some files lost.
4, please apply it to the corresponding ID, don’t flash on other ID.
5, please read the flash guides carefully before operating.