Note: Remember to check the battery life flashing before. This must be charged 70-80%. Flashing
your device firmware or backup your data before installing the device, including personal data.
Step 1: PC Lenovo's stock ROM Firmware Download the zip file and extract it. (This distribution files contain SP Flash Tool and Drivers).
Step 2: Install the USB drivers Lenovo PC. Take this step is not already installed.
Step 3: Closing smartphone / Switch (It is better to remove the battery after if possible)
Step 4: "removed in Step 1" Go to the extracted folder> SPI flash tool> you will see a Flash-tool.ex> Open here to start the installation.
Step 5: The setup> Download Tab> Distribution began click Loading. Now the firmware distribution file (current firmware folder extracted in Step 1) and install.
Step 6: (Off switch should keep in mind the device) to the PC with a data cable. Now button to begin flashing the flash (the green arrow mark) Upgrade / Download Click Button.
Step 7: Wait until the entire process. Successful Flash ROM Firmware Lenovo stock, at the end of a green dot / ring will be visible.
Lenovo S850 Stock Rom Firmware Flash File 4.4.2 Download
All Lenovo USB Drivers Download
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Lenovo S850 Stock ROM Firmware Flash File Download
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