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Maybe you can try to flash a third party firmware posted in XDA forum which i think is much better then the original one.
And also you need a twrp img to flash 3rd party firmware or a offical recovery img to flash the offical firmware.
If you have ADB installed on you laptop or desktop, you may try the following steps to restore your offical firmware.
01. Download the latest offical firmware from tolino website.
02. There is a file called recovery.img inside the firmware package. Extract it and put it in the root dir of your C drive.
03. Connect your reader to your computer, turn it off and then press the power button for about 40 seconds. (This should put the reader into fastboot mode.)
04. Using the command: fastboot boot c:\recovery.img to boot the device into recovery mode.
05. you can select recovery system from the setttings. the system will restore a factory firmware automatically.
06. after all is done, restart the device. Your data will be erased during the restoration.
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