Problem to Unlock the Bootloader - Xiaomi Mi Max 3 Questions & Answers

HI,
I'm trying now for over 3 days to Unlock the Bootloader on this device but it's not working at all.
I enable the options "OEM unlocking" and "USB debugging" and then registered an "Mi Account" and then i added it to the "Mi Unlock status" option.
And after that i download the tool "Mi Flash Unlock" and turned off the device and then i did boot it into the Fast-boot screen.
But the "Unlock" button in the "Mi Flash Unlock" is still be grayed out and the device then displays the message "press any key to shutdown".

I had the same problem two days ago. My solution was to connect the phone using a usb2 port as usb3 can cause that issue.

Oh boy my mainboard only has USB 3.0 and USB 3.1. I will test tomorrow to connect my Front USB 3.0 to a USB 2.0 port on my mainboard.

try to unplug your laptop from the power outlet and work over battery. this was one of my problems in my last unlock.

I don't have a LapTop but i bought a USB 2.0 Hub today and now it works. But it now says i have to wait 318 Hours to be allowed to Unlock the Bootloader. :/

Related

Zenfonego unrootable !!

Hi all, i wish to know why i cant root my asus zenfone go (z00vd) (cannot found the category in our site sry). I used some guides, all of them says the same process. Install adb driver, done. Fastboot mode your phone, done. Check with command line fastboot devices, done. Write "fastboot oem unlock" or "fastboot flashing unlock", the device says "unknown command". I allowed usb degub and oem unlock from inside the phone (installed fw 37). i tried several times, pls help me !! thanks so much.
few points. first of all disable usb debugging and revike all usb debugging authorizations. now connect phone to pc and enable the usb debugging. now on your device a message is must to appear something like authorize this computer or pc. tick that option and always authorize pc for usb debugging. enable oem unlocking in developer options..
second thing is special fastboot.exe.. the thread where you downloaded root files. there must be a special fastboot version. use the downloaded fastboot.exe to perform unlocking command

Cant transfer files from my phone to my pc via usb

so im using a pixel 2 xl, and i cant seem to transfer files between my phone and any pc whatsoever, i used to do this easily before, ive tried everything, turned on usb debugging, use the notification drawer changed the cable, but nothing seems to be working, what coudl be the problem and how do i solve it ??????????????????
USB mode now always defaults to "charging". You have to change it manually to "MTP" each time. At least in my experience.
I had the same problem. With my Nexus 5x and USB-C to USB cable it works, but with my Pixel 2 XL it works not, so i had to buy a new USB-C to USB cable and now it works.
Not sure what cable you are using but do not use a USB C to USB C cable, make sure its a USB c to USB a.
Sent from my Pixel 2 XL using XDA Labs
Ive been having issues lately too. Doesnt matter which cable i use. It will connect then disconnect over and over again. IT may be my computer but not sure how to check why it would be doing that.
Are you doing gigabytes of data? If it's just in the hundreds of megabytes transfer to Google Drive. I do that when I have files on my computer I want over to my phone and vice versa.
Sent from my Pixel 2 XL using Tapatalk
Engineer
nasfayde said:
so im using a pixel 2 xl, and i cant seem to transfer files between my phone and any pc whatsoever, i used to do this easily before, ive tried everything, turned on usb debugging, use the notification drawer changed the cable, but nothing seems to be working, what coudl be the problem and how do i solve it ??????????????????
Click to expand...
Click to collapse
I had the same issue with my Pixel 2 as well and after reading through numerous forums, I figured out how to fix it. its been two days now and I am still able to transfer files via USB.
Here is what you need to do:
1) Enable developer mode by going into Settings > System About Phone > Build number and tapping a few times (5 I think!)
2) Click back and then select Advanced > Developer Options
3) Scoll down the menu until you see "Default USB configuration". Tap and then select the option you require (ie: File Transfer)
4) Click back, then scroll up the menu till you see "USB Debugging". Enable USB Debugging.
5) Connect your Pixel 2 to you laptop/PC. The phone should appear in the Devices list in 'Control Panel\Hardware and Sound\Devices and Printers. Leave it connected for another 5 or 10 minutes and it should become available in "This PC"
6) Disconnect the Pixel2 from your laptop/PC
7) Disable "USB Debugging" and disable "Developer Mode" on the phone.
8) Reconnect the Pixel2 to your PC/Laptop. It should now appear under "This PC" every time you connect and you should now be able to view and transfer files between you PC and Pixel2.
Let me know if it works for you or not.
equlizer said:
Ive been having issues lately too. Doesnt matter which cable i use. It will connect then disconnect over and over again. IT may be my computer but not sure how to check why it would be doing that.
Click to expand...
Click to collapse
I had the same issue on my notebook yesterday - the phone would connect, but once I transmitted a larger file the transmission was terminated after a few seconds.
In my case it wasn't the cable, it was the USB port on my notebook! I simply used a different one and then it worked flawlessly
Thank god my notebook has 4 USB ports, I pity people with notebooks with a single USB port :laugh:
IsaacFC said:
I had the same issue with my Pixel 2 as well and after reading through numerous forums, I figured out how to fix it. its been two days now and I am still able to transfer files via USB.
Here is what you need to do:
1) Enable developer mode by going into Settings > System About Phone > Build number and tapping a few times (5 I think!)
2) Click back and then select Advanced > Developer Options
3) Scoll down the menu until you see "Default USB configuration". Tap and then select the option you require (ie: File Transfer)
4) Click back, then scroll up the menu till you see "USB Debugging". Enable USB Debugging.
5) Connect your Pixel 2 to you laptop/PC. The phone should appear in the Devices list in 'Control Panel\Hardware and Sound\Devices and Printers. Leave it connected for another 5 or 10 minutes and it should become available in "This PC"
6) Disconnect the Pixel2 from your laptop/PC
7) Disable "USB Debugging" and disable "Developer Mode" on the phone.
8) Reconnect the Pixel2 to your PC/Laptop. It should now appear under "This PC" every time you connect and you should now be able to view and transfer files between you PC and Pixel2.
Let me know if it works for you or not.
Click to expand...
Click to collapse
Got the same problem. Since a few days device isn't recognized on any computer. Tried serveral usb cables (they were all working before) - no success. As soon as i am connecting device to a windows computer it says "device couldn't get regonized properly". So it isn't recognized as android phone. So your method didn't work (tried all the steps before). I also remarked before, thad my device sometimes restarts as i plug in an usb cable. Mainly when connected to a pc but also serveral times only when charging. So i resetted my device back to all stock (even formated data), flashed original boot whitout twrp, no root. It's starting nice but i even can't install the update (january patch) through device. Alway gives me install error. So it isn't recognized in adb... So i can't use fastboot mode to reinstall twrp.... Any advice? Think gonna claim for replacement.... Seems a hardware problem.
Had something similar a couple of months back.
Just do a quick check with usb dac and otg. If they are not working, the component is fried. RMA.
Else, faulty cable or friend port in laptop.

Device not showing up on Windows

I'm trying to unlock my Swift's bootloader. I've enabled OEM unlocking and USB debugging in settings, and I've also installed adb and fastboot to my computer. However, when I plug my phone into it, all it does is charge. Using 'adb devices' doesn't bring up my phone, and no popup window comes up on my phone either. I can't even find it on Device Manager. What should I do to get it working?
Edit: Turns out the USB cable I was using only supported charging. I plugged in the standard Wileyfox cable and everything's working again. Problem solved!

Problem unlocking the mi Max 3 : fastboot doesn't "stick" !

Hi guys,
Having received the mi Max 3 today (as a replacement for the old mi Max 3 that broke), I tried to unlock it, but I have a really weird problem.
I boot the device in fastboot mode. No problem so far.
Then I hook it up to the PC running Windows 10.
As soon as it is connected to PC, the display goes totally black with only some tiny caracters at the top left corner saying "Press any key to turn off device".
Anyone got that already ?
How do I solve this ?
That does not happen if the device is connected to my Linux powered computer... But that does not really help as the device can't be unlocked with Linux
WHY ? Why don't they just allow to use "fastboot oem unlock" to unlock the device ?
Regards.
In the programmer's options enable USB debugging and select the option Unlock OEM. start the phone in fastboot mode and connect to the computer having the miunlock program running
Bartos81 said:
In the programmer's options enable USB debugging and select the option Unlock OEM. start the phone in fastboot mode and connect to the computer having the miunlock program running
Click to expand...
Click to collapse
Hi,
Thanks for your answer.
I did that of course...
But still, as soon as I connect the phone to the computer in Fastboot mode : black display with only a tiny : "Press any key to shutdown"...
Any other idea ?
Regards.
You need to use a usb2 port instead of usb3

Can't connect to my PC

Hello,
This is my first post.
I have a MI MAX 3 and when i plug it to my pc, it charges only
I get no popup with any other usb option like MTP
USB debuging is on and in developper options, i have chosen "file transfer" as default usb connection option (itried PTP too = same result)
Wiaomi usb drivers and ADB/fastboot are set up
When i connect my childs redmi note 7 phones, it immediatly works with the same cable
As i would like to unlock bootloader and root this phone, i need ot to be seen by the pc
Can you please help ?
Thanks

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