HI,

I have some trouble with my samsung j5 prime. With massage
like "failed to verify whole-file signature " signature failed in
CWM recovery mode. Please someone HELP me. !! i want to
root my device but. I can't fix that.samsung j5 prime.
Please help.

I didn't find the right solution from the Internet.

References:
https://forums.androidcentral.com/android-6-0-marshmallow/858983-signature-verify-failed-twrp-root-failed.html
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Thanks