Unlock Bootloader ZD553KL - Android Q&A, Help & Troubleshooting

Hello guys, i bought zenfone 4 selfie (ZD553KL) and i'm trying to unlock bootloader, so i downloaded Asus official unlock tool but when i try to unlock there's a message saying "An unknown error has occurred which may be a problem with the network connection." but my wifi connection is ok. Anyone knows how to fix it? Thanks!

Same problem I am facing

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Working unlocking tool

Hello,
I want to bring my dad's TF201 back to life. It's on stock but that's extremely slow & laggy so I want to flash a custom rom on it. The only problem is that the device is locked and de unlocking tool from ASUS does not work on my tablet.
It says that there is a unknown error and something with the connection. That could be a fault with the serial number but when I go to device info, the serial number is visible so that is not te problem I guess.
Is there a fix for it or is there another method to unlock the TF201?
EDIT: I succeeded to unlock my bootloader. After a lot of tryouts I got a popup to log in with my google account.
But that was my other problem, It was constantly saying that my password was invalid (2 step verification was disabled).
So I removed my google account from my tablet and after another try my tablet was unlocked.

bootloader unlock problem

When I Tried To Unlock My Bootloader I Get Error Message Couldn't Verify Device Im Using Redmi Note 3 Sd India Version Any Solution Then Please Rply Me ...
I have the same issue. Since 3 days searching for a solution but no hope.

[help] can't unlock the bootloader of p20 lite

I can't unlock the bootloader, have tried every possible method still no luck. Somebody help me.
Please post the error, then only someone could help you
if you can't unlock, then i suggest you, not to try it, its way better for phone, to never unlock it, especialy, if you can't or don't know how?
dc-unlocker (error connecting)
Error connecting to server. Cant login. Tried in win10 and win7. I bought 4 credits also.

Unlock redmi 8a bootloader

I am facing difficulty in unlocking the bootloader of my device. The Mi Unlock tool says "couldn't Unlock, unknown error (-1)" during the final unlock process.
Do I have to wait a particular time before it can be unlocked. Please I need help
Using Global version 10 updated to 11
for my device 168 hour after unlocked preblemless
chek your driver on pc
I also have to wait a week after request unlocking. Make sure you send request and the mi unlock tool is the lastest version from official website.
I cannot even start the procedure it keeps saying my sim card is not activated, and when I try to see the unlock status (part of the unlock procedure), it keeps sending me an error that it cannot send the sms, but i can send sms no pro blem and have more than enough data available, I cant go past this until my sim gets "activated"no idea what it means, I have been using this sim/number for years

Problem With Unlock My Phone's Bootloader.

Hello everyone, I've recently tried to root my Redmi Note 9 (merlinnfc) The OEM in Dev options is turned on, and the only problem is, there's no way to fix the " FAILED (remote: 'Token verification failed') " error message.
I have everything i need, there's the magisk zip on the phone, and i have the TWRP image for it.
The only this i need to do is unlock the boot loader.
Any ways to unlock it? PS: I've tried MiUnlock, my country's unssuported. (It dosen't work. No verification message, turns out my region isn't supported)
Best Regards - FriendlyChemist
Hint: Add "Redmi Note 9" to front of this tread's title thus owners of this device get addressed.

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