I want to update my mobile with new version

[dimpaldevi2005]

Please help me

[kikoly]

If your ROG Phone2 is a Tencent version, you need to unlock the Bootloader to update the WW firmware. Please contact the person who purchased the phone. If you are buying a WW version, the update will be automatically updated in the root directory or updated via FOTA.

[dimpaldevi2005]

I bought this phone in 2018

[kikoly]

dimpaldevi2005

I bought this phone in 2018

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Are you sure you bought ROG Phone 2 in 2018?
Which mobile phone do you ask for updates?

[rokkystrife]

kikoly

If your ROG Phone2 is a Tencent version, you need to unlock the Bootloader to update the WW firmware. Please contact the person who purchased the phone. If you are buying a WW version, the update will be automatically updated in the root directory or updated via FOTA.

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I don't understand a single word you just said.
WW firmware?
FOTA?
What is the difference between the Tencent version and the regular version and why can't the Tencent version update normally?