How to do offcial unlock after having it unlock unofficially? - Xiaomi Redmi Note 3 Questions & Answers

Hello there,
I got a Kate device, which I unlocked unofficially after oficial unlock failed after 50% in September.
Now I'm running TheStrix' CM14.1 with this firmware:
http://forum.xda-developers.com/redmi-note-3/how-to/cm14-14-1-aosp-n-firmware-kenzo-kate-t3507789
But now I read, that TheStrix recommends flashing the MIUI Dev Rom, and afterwards his new 14.1 Firmware in order to run 14.1 correctly.
From what I read so far, its recommended to do the official unlock now, because it is working. And there is no chance of accidentally relocking it afterwards?
Could someone give me a hint on how to accomplish that? A short step-by-step list would be much appreciated!
I guess I would have to Flash the dev rom first, then unlock, then flash the firmware and then install CM14.1, is that right?
How do I flash the dev rom and which one is the right one?
Will my TWRP stay in place during all this or do I have to install it again? Am I using the right TWRP for all these operations?
Right now I have TWRP 3.0.0-0 cofface installed.
While TheStrix recommends using his TWRP with F2FS support. Would it be safe to flash that now?
Thank you guys so much!

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The only way to do it by flashing official MIUI fastboot ROM in EDL mode via MiFlash.
Sent from my Redmi Note 3 Pro using Tapatalk

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for those who want to flash custom roms without taking the time to unlock bootloader follow this steps..
1- download any miui fastboot rom
2-extract it
3- download alka twrp recovery
4-rename it recovery. img and paste it in the extracted folder thus replacing the miui recovery
5-flash using mi flash tools in EDL mode
6-now you have TWRP installed... format your phone.. and now copy the roms, mods, whatever the **** you want in your phone by pc and you can flash that

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sunilband007 said:
for those who want to flash custom roms without taking the time to unlock bootloader follow this steps..
1- download any miui fastboot rom
2-extract it
3- download alka twrp recovery
4-rename it recovery. img and paste it in the extracted folder thus replacing the miui recovery
5-flash using mi flash tools in EDL mode
6-now you have TWRP installed... format your phone.. and now copy the roms, mods, whatever the **** you want in your phone by pc and you can flash that
Click to expand...
Click to collapse
Doesn't work on latest MIUI rom bro. Official recovery won't replaced.
Sent from my Redmi Note 3 Pro using Tapatalk

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sunilband007 said:
for those who want to flash custom roms without taking the time to unlock bootloader follow this steps..
1- download any miui fastboot rom
2-extract it
3- download alka twrp recovery
4-rename it recovery. img and paste it in the extracted folder thus replacing the miui recovery
5-flash using mi flash tools in EDL mode
6-now you have TWRP installed... format your phone.. and now copy the roms, mods, whatever the **** you want in your phone by pc and you can flash that
Click to expand...
Click to collapse
As I said, I would like to unlock the phone once and for all. But thank you anyway!
@febry_valdy
Thank you for your reply! Could you provide a link to the correct fastboot rom? The Xiaomi website is a big riddle for me
And could you tell me what EDL Mode is?

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febry_valdy said:
Doesn't work on latest MIUI rom bro. Official recovery won't replaced.
Click to expand...
Click to collapse
you are trying fastboot rom right?..

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ebivan said:
As I said, I would like to unlock the phone once and for all. But thank you anyway!
@febry_valdy
Thank you for your reply! Could you provide a link to the correct fastboot rom? The Xiaomi website is a big riddle for me
And could you tell me what EDL Mode is?
Click to expand...
Click to collapse
download the zip i attached.... put phone in fastboot mode then double click edl. cmd.. the screen will go black...
then by using mi flash tool flash the miui rom with replaced recovery (i used 6.10)
also this will unlock bootloader one and for all... (until you lock it again manually)

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sunilband007 said:
you are trying fastboot rom right?..
Click to expand...
Click to collapse
Yes,
Sent from my Redmi Note 3 Pro using Tapatalk
---------- Post added at 09:04 AM ---------- Previous post was at 09:03 AM ----------
@febry_valdy
Thank you for your reply! Could you provide a link to the correct fastboot rom? The Xiaomi website is a big riddle for me
And could you tell me what EDL Mode is?[/QUOTE]
Someone has uploaded edl via fastboot, there you can take a profit from it.
Sent from my Redmi Note 3 Pro using Tapatalk

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febry_valdy said:
Yes,
Click to expand...
Click to collapse
i mentioned the rom i used and method above... refer to it

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sunilband007 said:
i mentioned the rom i used and method above... refer to it
Click to expand...
Click to collapse
you mentioned "download any miui fastboot rom" that's all bro

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febry_valdy said:
you mentioned "download any miui fastboot rom" that's all bro
Click to expand...
Click to collapse
it should work with any fastboot miui.... im just telling which one i used

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sunilband007 said:
it should work with any fastboot miui.... im just telling which one i used
Click to expand...
Click to collapse
Ooh, u used 6.10 version. I just realized it. Hahha.
Sent from my Redmi Note 3 Pro using Tapatalk

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Thank you all for your replies. To sum it up, I made a step-by-step list, could someone please confirm that.
1. Put phone in fastboot mode and flash official MIUI fastboot dev ROM (6.11.24) in EDL mode.
2. Unlock phone using MiUnlock
3. Install TWRP (f2fs) using fastboot
4. Install CM14 Kate firmware provided by TheStrix
5. Install CM14.1 nightly by TheStrik
6. Install Gapps
Is that about right? Can you tell me after which steps I will have to wipe? And which partitions to wipe..?