I'm a total noob amateur, and I don't want to threadjack, but my question/problem seems related.
I have a new black K4NT w/ special offers running 4.1.0 and Tequila version 184.108.40.206.
I tried to jailbreak it yesterday by following Yifan method 3.
Initially, I tried to enable diags by creating a text file w/ that name and adding it to the root directory, but this didn't work.
I came across a youtube video that copied the 0 byte "DONT_HALT_ON_REPAIR" file, and renamed it "ENABLE_DIAGS" to enter diagnostics. I did this: I successfully entered diagnostics.
Aside from this deviation, I've followed steps 1 - 14 exactly.
Unfortunately, when I try to exit diags (per step 14), I receive a "device_info.xml not found" message, and can't exit.
I feel like a total idiot, and would sincerely appreciate any advice anyone could offer.