When i purched aecond hand it ahows cusrom not offical firmware.i format cached and factory reset.then update firmware appear.i updated it began to show offical.but when i restarted the set it again shows custom.then i update naught 7
With odin.first it shows offical but after some time it again shows custom.and wifi bluetooth as same as start.plz help to resolve issue.bundle of thanks
You can't apply stock OTA updates on a rooted device that has a custom ROM and/or custom recovery installed on it.
For future reference...
You can't apply stock OTA updates on a device that has been rooted, has custom recovery or has custom ROM.
In order to apply stock OTA update on a rooted device, you have to remove root from the device and you have to flash stock recovery to remove the custom recovery.
The device can't have any modifications, it has to be back to stock like it was when it was new, THEN you apply the OTA update.
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