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[Q] what makes android os said that os upgraded?

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EdauCode
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Default [Q] what makes android os said that os upgraded?

whats the difference between the old and new android os version in any rom? how can i upgrade it?
example: i have an android phone with version 4.2.2 and i want my phone to use android 4.4 upgrade, but the OEM not provide the updates, so i would update it myself, but i dunno how to make it happen, so i need your help to tell me what must i know before i make it happen

thanks before for your help
bielcarioca Old
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Default [Q] How can CWM be built in a kernel?

Well, the difference between and old version and a recent one is that the newer version has more features and maybe some bug corrections. Just like Windows 7 and 8, or iOS 6 and 7...

It's pretty hard to update your phone by yourself. You would need to learn about bootloader, firmware, rom, recovery...
And then, you should have a custom recovery. You should port Android 4.4 for your phone, and flash it through the recovery.
And maybe you would need to unlock the bootloader.

PS: What phone you have?

Sorry for my bad english.
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