I have a GT i9810 MTK6575 Alps and uninstalled the interface and now I can not get in to configure anything, including USB debugging mode. I’m trying to find a compatible ROM, but so far unable to. The I downloaded always give the message “E: signature verification failed”. How can I fix this problem and get back to using the appliance? Thank you!
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On-time: How do I enter download mode that smartphone? I can only enter “system recovery mode” (volume down button + home button + on / off button).
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