can't unlock the screen after turning off "miui optimization" - Xiaomi Mi Max Questions & Answers

I'm on MIUI MULTI 6.9.8/9 rom with unlocked bootloader and rooted.
I just turned off the "miui optimization" in the developer option out of curiosity.
Turning off the option requires me to reboot the phone,
and after the reboot both fingerprint and passcode doesn't unlock the phone anymore...
Is there any way to fix this problem?
So far I tried clearing cache and dalvik cache, but it doesn't help.

I have turned off miui optimization aswell but never faced this issue.. Resetting your phone should be okay I guess.. Are you on a custom ROM?

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Weird Problem! Cant unlock/factory reset ..

My sisters gnex is acting strange.
I try to unlock bootloader.. it says unlocked, and when rebooted, says again locked.. (in fastboot)
Also when i try to reset the phone(factory reset), using stock recovery, or the option in the settings, NOTHING happens!!!
The phone reboots, and it is in the same state it was a couple of days ago with:
gps opened, 3g enabled...
Whatever i do to the phone, it restores to that state...
Also some random reboots occured in the past, and phone again went to this state, no matter what changes you do on the phone. eg my sister put face unlock.. and after a random reboot we got:
previous unlock method and.. gps on, 3g enabled..
Any ideas???
Phone is on 4.0.4, and IMM76K..
3.0.8 kernel.
Stock
now, i unistalled all apps, restarted, and ALL was back there...
even gps was open...
It seems we cannot do any change....
I would return it, and get a new one.
Sent from my i9250
isnt any solution to this?
fastboot command for factory reset is:
fastboot erase userdata
and ..
fastboot erase cache
?

[Q] Superposition Screen Issue

Hello everybody!
I was trying the development option "superposition screen" on tools (Cyanogenmod 10.1) and I have a superposition screen that puts "#1 superpositon 720x480", when i try to get to Settings to quit that, the phone restarts, and when i open a new app the phone restars aswell, I tried wipe cache and dalvik and hard reset but the hard reset dont work, and the wipes dont do anything.
Any help?

Weirdest problem with the 816

So I am keen on how to fix bootloops and going back to stock/rooting, etc...
My friend asked me if I could fix his phone for him, so I said why not. Thing is, it's the weirdest problem I ever faced with a phone, EVER.
The problem is the phone boots normally, I unlock the pattern, some seconds later it turns off and reboots. So I said hey why not boot into safe mode, perhaps it's an app causing all of this, so I did, worked perfectly, turns out "Google Play Services" was "forcing close" and suddenly phone turns off. I uninstalled all updates, cleared data, cache, everything and installed EVERY SINGLE APP on the phone and removed pattern, then rebooted phone. BUT, when i rebooted, the pattern was back, language was back to arabic (I changed it to english when in safe mode), ALL APPS were back, and the updates to Google Play Services were back. It's like I didn't do anything. So I said before it turns off I'm goin to try 1 thing, so I immediately went into settings and managed to uninstall updates for Google Play Services and cleared cache data, even to all google apps, and then I re-uninstalled all applications (out of safe mode), I thought perhaps when irebooted from safe mode, everything was back, now that I'm goin to reboot out of safe mode, this will work. So I rebooted, and guess what? EVERY SINGLE APP was back, system language back to arabic, AGAIN, and pattern was back and GPServices updates were back.
So I said hey, let's factory reset. SO I went into safe mode, I hit factory reset, phone reboots to recovery (vol up + power ) > Factory reset done > wipe cache partition done > reboot : EVERYTHING WAS THE SAME. I am completely shocked. I tried doing Factory reset out of safe mode too, same result. So I said hey, let's unlock this thing and just flash a stock rom, that'll fix it indeed. I went into fastboot and tried flashing the unlock token, the confirmation page appeared, clicked "YES", phone reboots: PATTERN AND EVERYTHING STILL THERE, while they shouldn't be since unlock performs a Factory reset, so I went back to fastboot and it indeed was NOT unlocked, I tried many times and it failed every single time I tried.
So I said hey, download AVG Antiviirus and run it perhaps it can find the problem, so I did and ran it, couldn't find anything, rebooted phone and AVG was gone. So I said, hey, again, download Google Play Services and install it on your phone, perhaps it will permanently override the one existing and it will fix the problem (it didn't, it would disappear and the old G.P.S reappear as soon as I reboot). So I said hey, you got the OTA Zip, it has the firmware, perhaps flashing that firmware will shake things up, most probably brick the phone but perhaps will let me unlock it. So I went into fastboot > fastboot oem RebootRUU > phone reboots normally, I CAN'T even access RebootRUU.
So as you can see I probably tried everything one can do in this situation.

I ticked everything on advanced wipe to delete. Now my phone is stuck on the bootload

I'm currently trying to root my Moto G5 but I can't seem to get a rid of the password it asks at the beginning. I wiped everything by ticking the whole lists on advanced wipe, format data then swiped to factory reset. Now my phone won't boot up normally and stays stuck on this screen. I can however use the bootloader. What can I do to fix this?
It stays stuck on this screen i.imgur.com/OeRczD6.jpg
I told you in the other thread you created to NOT advanced wipe as this will not remove encryption
You have two options
1- flash stock rom firmware via fastboot
2- remove encryption and flash a custom rom
Oh and your phone obviously won't boot as you have wiped system (the rom) so there's nothing on your phone to boot!
See my reply on how to remove encryption in the other thread you created
https://forum.xda-developers.com/g5/help/twrp-password-install-files-ill-pictures-t3913693

HTC M9 Settings stopped issue

Hi everyone. I installed a substratum theme on my M9, after doing a soft reboot, my settings app refused to come on. It kept saying settings has stopped. I booted to TWRP, and cleared cache. The phone used about 5 minutes to come on, but i can't get past the home screen (no screen lock) because it keeps saying settings has stopped. I can't reboot to recovery mode because my volume buttons are bad. The cache I cleared disabled USB debugging (I always have it on). I'm totally helpless and clueless. I don't mind losing all the data on the phone. How do I go about it? I'm on nougat, stock rom, and have root...

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