[Xiaomi Redmi Note 3 Questions & Answers] Billibong:
I see tons of people complaining that the Mi Unlock fails at 50%. I had that too, but solved it (somewhat) after downloading and using a newer version of the Mi Unlock (version 2.3).

Although I get past the 50% mark, the Mi Unlock program fails after verifying phone. [I tried to put a picture of the result below but XDA bars me from this practice until after I have submitted 10 posts.] Since XDA bans me from posting a picture of the result, I will try to verbally illustrate:

The Mi Unlock process runs the entire course - 100% - and then gives me green check mark and says, "Verified". The next step the Mi Unlock program takes is to unlock the bootloader. However it is at this step the process fails. Instead of unlocking, I get a message saying "Couldn't Unlock." Under those words is the following message, "After 72 hours of trying to unlock this device".

Anyone even know what that is supposed to mean? Is that just chinglish? Or better still, how can I get my device unlocked?

I SEE TONS OF PEOPLE WITH THIS SAME PROBLEM! Anyone have any idea what is going wrong? How do I deal with it? Am I to assume the message is suggesting we wait that particular number of hours before we can make the thing unlock the bootloader? Anyone? This IS a question that plagues many in the MIUI forum! And after going back roughly 70 pages into the forum, I see no solution; no answers! Just the same complaint over and over again and again.

I tried the unlocker a few times afterward, over the course of the day, with the same result. However curiously, there is one change to the message. It now says, "After 63 hours of trying to unlock this device". Is this suggesting I have to wait and try it in 63 hours?

Again, I see this same complaint time and time again on the MIUI forum for this phone. Anyone have any idea how to handle this dilemma?

One last question: How do I change out my MIUI ROM (currently MIUI 8.6.8.18 Beta) to a developer ROM? Ultimately I want to install a custom RR Rom or some other custom ROM. But MIUI 8.6.8.18 is android 5.0 LL; and the new Custom ROMs available are using android 7.0. My understanding is I need at least an MIUI Dev Rom with android 6.0 MM on the phone before it will let me leap over to some other Custom ROM with android 7.0. [I tried it. And though everything worked perfectly, (got my device rooted, and installed ZCX TWRP, etc.), it just bootlooped after flashing in TWRP. I tried it with several Custom ROMs - Always with the same bootloop. After exhaustive reading in web forums, the suggestion out there seems to be that I have to go back and install a DEV Rom with android 6.0 MM; then free the bootloader again, reinstall SuperSU (or similar), and then TWRP, etc. , and finally I will be able to Flash to one of the new Custom Rom's that uses Android 7.0.]

With this objective in mind, I downloaded the Dev Rom to my phone (7.7.20 - which is the latest for this phone). However, the UPDATER app on the phone won't update from the MIUI 8.6.8.18 Beta to the MIUI 7.7.20 Global Dev Rom. I select it in the updater by browsing over to it, then click "OK", but nothing happens. Instead of installing the MIUI 7.7 Dev Rom, the app just says that there are no updates...

Any ideas? Thanks