1. mel2000's Avatar
    unrooted XT1644 (previously Magisk rooted)
    bootloader unlocked
    TWRP 3.1.1-0
    ElementalX kernel 3.10.84
    OS version: 7.0
    Security patch level: June 1, 2017, firmware NPJ25.93-14.5
    Baseband: M8952_70030.25.03.62R ATHENE_RETUSA_CUST

    SafetyNet app failed "CTS profile" on unrooted Android. Oddly, my phone passed SafetyNet when I used Magisk. But after restoring my phone from a Nandroid backup taken before Magisk was flashed, it no longer passes. Might there be file directory remnants of Magisk that are affecting the SafetyNet result? Any troubleshooting steps appreciated.

    There's now a September 1, 2017 OEM security OTA update waiting for me in my Notifications bar. I'm hopeful that the update will create a new system partition that'll get rid of what's causing the SafetyNet fail. Unfortunately a logo.bin TWRP flash fix made a change to my system partition settings that won't allow me to safely take an OTA update. The last time I flashed a security update was through the kindness of someone who provided a TWRP-flashable zip of the June 2017 NPJ25.93-14.5 OTA file. I'm hoping the same will eventually be provided for the September OTA update.
    11-07-2017 03:26 PM
  2. mel2000's Avatar
    EDIT: I rolled back to the June 2017 update and was able to apply the September update afterwards. But SafetyNet still fails so I must assume it's due to my unlocked bootloader status.
    11-10-2017 09:30 PM

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