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My Axon 7 currently has Android 7.1.1 and Build number is A2017UV 1.1.0B32. I am trying to follow @DrakenFX thread (https://community.zteusa.com/discussion/15432/guide-unofficial-safe-method-unlock-bootloader-usa-axon-7-only/p1) to unlock the bootloader and install LOS. I downloaded all the files from above thread links and saved on my SDcard. After Step 2 (Wipe Data/Factory Reset), I applied Step 3.1 (A2017UV1.0.0B29_MoveToSDCard.zip). It came up E: failed to verify whole-file signature; update package verification took 120.1s; E: Signature verification failed; E: error :21; Installation aborted.
What caused that and what I should do to move forward? (The phone doesn't have TWRP yet, was installed MiFavor; Kernel those type files inside). Thanks in advance.