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  1. #1
    Join Date
    May 2018

    Default How do I revert to "official" HTCM9 software?

    I bought my HTC ONE M9 phone via Amazon. It looks like it was an import from USA and is "rooted" to AT&T.

    Whenever it tries to update the system software, an error message is issued, and the update is aborted.

    How do I fix this?

    Here is the error message...




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