(P920 upgrading 2.3.5 Detailed process and process (for no signal after oil card brushing, please use this method to brush the machine), only the official version, KDZ format ROM1, first of all, ensure that your mobile phone is now root and backed up (prevent problems after upgrading for recovery) 2, please install various P920 drivers, please use Pea pod or 91 helper, they will help you automatically implement the drive installation. 3. After the driver is installed, please check whether there is "!" in the device manager “?” Such drivers are implemented for installation. 4. Software installation This document includes the following accessories:)
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