![]() When you're ready to flash, turn off the Motion, hold the power and volume down buttons at the same time, and the device will enter fastboot mode (with a service menu in the corner). However, since you're jumping forward two years in terms of the OS, a wipe is recommended. sh files for non-Windows), flashall and flashallnowipe the latter does the same as the former, except without wiping the device. Once you download and extract the file (it'll need 7-Zip on Windows or something like Keka for Mac), you'll see some script files (.bat files for Windows and. Then, download the ACB256 factory image to a computer: Still, you could try flashing a factory image of the latest ACB256 OS (August 2019 patch) onto the AAM871 device.Īnyway, make sure anything important on the AAM871 device is backed up beforehand (copied to a computer/other phone, saved onto a portable SD card/the cloud, etc.), and then disable any device passwords or locks on the AAM871 device, since TCL never did figure out how to bypass that with reloading software. If you check the PRD (device type number, pretty much) by typing *#837837# into the phone dialer it might help diagnose why no updates ever came if it's PRD-63739-7xx or 8xx, that indicates a prerelease device not meant for public distribution. As far as I can tell AAM871 was a prerelease build, which happens sometimes with devices dumped onto eBay.
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