Develop Bugs

Asus zenfone 2 ZE550ML is not recognized by pc in system, fastboot or recovery mode.

I keep changing roms since long time before on my oneplus devices, i bought asus zenfone 2 and tried to root the phone, it got bricked and i unbricked successfully by using xFSTK tool. device turned on like before but unable to connect to pc, even when MTP is selected it just starts charging when i connect it to pc, even tried with different types of cables still the same issue. tried in recovery and fastboot as well.
at least if it would work in fastboot then i can install twrp and add custom rom. not even able to do that.
P.S - tried even installing adb, intel drivers. problem doesn't seem to be going..
PLEASE HELP.

deejaysandee143 said:
I keep changing roms since long time before on my oneplus devices, i bought asus zenfone 2 and tried to root the phone, it got bricked and i unbricked successfully by using xFSTK tool. device turned on like before but unable to connect to pc, even when MTP is selected it just starts charging when i connect it to pc, even tried with different types of cables still the same issue. tried in recovery and fastboot as well.
at least if it would work in fastboot then i can install twrp and add custom rom. not even able to do that.
P.S - tried even installing adb, intel drivers. problem doesn't seem to be going..
PLEASE HELP.
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flash latest Raw firmware with asus flash tool. get it from following thread.
http://forum.xda-developers.com/zenfone2/help/thead-bricked-phone-updating-to-mm-tips-t3452785

sukhwant717 said:
flash latest Raw firmware with asus flash tool. get it from following thread.
http://forum.xda-developers.com/zenfone2/help/thead-bricked-phone-updating-to-mm-tips-t3452785
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Brother, after completing this process only i am facing this issue..
unable to connect my phone in any mode. not even to other pc.

Fast charging works?
There may be a problem with the flex cable that has the sim + sd slots on it. Costs 3$ on ebay and its very easy to replace.

pecholino said:
Fast charging works?
There may be a problem with the flex cable that has the sim + sd slots on it. Costs 3$ on ebay and its very easy to replace.
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No, fast charging was not working after the process in xFSTK tool. it would take around 8 hours to get 100 %

deejaysandee143 said:
Brother, after completing this process only i am facing this issue..
unable to connect my phone in any mode. not even to other pc.
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Click to collapse
i said flash raw firmware again.. you will overcome the issue! which version you are currently on?

sukhwant717 said:
i said flash raw firmware again.. you will overcome the issue! which version you are currently on?
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The phone doesn't boots normally, and neither connects in fastboot nor in recovery. only shows error. its version 5

deejaysandee143 said:
The phone doesn't boots normally, and neither connects in fastboot nor in recovery. only shows error. its version 5
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Click to collapse
then you have to use xfstk again..you can not do anything until you are able to go into fastboot mode. flash xfstk again and again until you enter fastboot mode

sukhwant717 said:
then you have to use xfstk again..you can not do anything until you are able to go into fastboot mode. flash xfstk again and again until you enter fastboot mode
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Click to collapse
I can enter only in fastboot mode but fastboot wont be detected in adb, as i mentioned it's not getting recognized..

Well I am having the same simptoms since the sdcard slot got burned. No fast charging and no pc recognition. I am currently waiting for the flex cable so I can fix it

fastboot problem in m1803E8SG

Hi
I have a problem in unlocking my redmi note 5 pro.
I followed every steps which said guide but im stuck in step when i have to turn on xiaomi unlock tool.
After entering fastboot and connecting to laptop, windows recognize my phone as fastboot devices i can use every command possible to use. But if only i run any xiaomi tools fastboot become inactive it shows: "press any key to continue".
I tried almost everything, windows reinstall, drivers reinstall, didnt work. PLZ help me.

It`s because i5-8xxx or i7-8xxx.Try another computer which isn`t these.

Try another port of USB, don't use 3.0 USB port. It's fix mine.

I have intel celeron :x
I tried both on usb 2.0 and 3.0 didnt work.

Can't unlock bootloader. Device no longer detected the moment I open Mi Unlock Tool.

Sorry if this is the wrong thread.
Hello guys, I have a Redmi Note 5 (Global Version) with Snapdragon 636, and this phone is really amazing. I'd like however to unlock its booloader so I can install Pixel Experience on it, as I'd like to use other roms than MIUI. The issue is, well, I can't.
Something really strange happens: if I connect my phone via USB 2.0 to my computer, it is recognized as usual. It appears in Device Manager, is recognized by ADB, no problem. Then I reboot in fastboot mode and the device is still there. However, the EXACT moment I open Mi Unlock Tool, without clicking anything (Agree or logging in to my mi account) the phone is instantly disconnected and the "Press any key to shutdown" message appears on the top-left of my phone's screen.
Stuff I've tried:
- made sure OEM unlocking and USB debugging are on
- installed Mi Unlock tool in C:
- installed the ADB drivers in C:/Program Files
- disabled integrity checks from CMD
- installed and checked the MiUSBDriver umpteen times
- used 4 different versions of Mi Unlock Tool (1.0, 2.2, 2.3, and 3.3 - 1.0 halts at 50%, the other 3 won't detect my phone at all)
- made sure the device is bound to my Mi Account
I've tried using Hexerus' guide here (post #18) and everything seems to work fine, until step 6 when my phone instantly disconnects when opening Mi Unlock Tool.
Do you guys have any ideas? Thanks.

use usb 2.0 cable and port

devcon69 said:
use usb 2.0 cable and port
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Used USB 2.0, didn't work

Happened with me before, and I looked Google and found some solutions like installing the drivers again and using old miunlock tool and using different USB Socket however, none of theme worked,
Next day I opened the laptop to try again and suddenly it worked!
I didn't know what exactly fixed it

After the 720 hours period, I have spent literally weeks of trying to unlock my device's bootloader and what I would add is to switch between computers. I'm running Windows 10 on my room computer and all I had with MiUnlock were errors such as device disconnecting once in fastboot, "Couldn't unlock" messages, chinese characters... Until I decided to use my 2005 Windows 7 desktop and wow !, device unlocked at first try ! No need any other trick

just uninstall Previous drivers or use Windows 7 PC,with latest drivers of ADB ,i also faced same problem:angel:

Need Urgent Help - No OS, can't use phone, fastboot & TWRP only

I don't know how this happened, I tried to update to MIUI 10 and now TWRP says I don't have an OS and fastboot just boots on & off, on & off for eternity.
How can I reset it? When I tried updating with TWRP I got some weird error and now this happened. Is it possible to do an ordinary factory reset from TWRP or fastboot? Also, I can't plug my Xiaomi MI6 into the computer with USB-C. Some time ago I dropped it with headphones connected to the USB-C and the connection ONLY works for charging. Headphones don't work, and I don't think it works on the PC either. UNLESS, there's so program I need for the computer to connect to the Xiaomi, but plugging it in to the PC it doesn't react or the computer says it doesn't know what it is.

download fastboot rom, and flash it with mi flash.

zilan said:
download fastboot rom, and flash it with mi flash.
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Click to collapse
Hi! I have the Mi Flash program, but when I connect my Xiaomi MI 6 to the computer, my computer keeps saying it doesn't recognize the device and I can't refresh in Mi Flash to find my phone

Bump.
Well I could not wait anymore, I bought a new phone but I still wanna try fix this phone to sell it.
Is this forum dead?

Similar problem here. Help guys!

Download a custom ROM and put it into a flash or sd card then connect it to your device through OTG and wipe system vendor cash data but DO NOT WIPE INTERNAL STORAGE, then just flash the rom and reboot .

Question Fastboot mode

When i try to enter fastboot i am not getting the logo but just the word "fastboot". My poco f3 works perfectly but will not enter the fastboot mode with the logo. When i connect to the pc it is not recognised in this mode. I would be grateful if anyone can advise how to get it back to normal.

pipin18 said:
When i try to enter fastboot i am not getting the logo but just the word "fastboot". My poco f3 works perfectly but will not enter the fastboot mode with the logo. When i connect to the pc it is not recognised in this mode. I would be grateful if anyone can advise how to get it back to normal.
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New fastboot logo is the orange FASTBOOT word. So it is already normal. If it's not recognized it may be a problem with drivers, usb cable, debug authorization/permissions.

pipin18 said:
When i try to enter fastboot i am not getting the logo but just the word "fastboot". My poco f3 works perfectly but will not enter the fastboot mode with the logo. When i connect to the pc it is not recognised in this mode. I would be grateful if anyone can advise how to get it back to normal.
Click to expand...
Click to collapse
Hi,
I have had my F3 for 13 months and Fastboot and windows can still be temperamental, my PC has 10+ usb sockets.
As bozinsky73 Suggested installing the correct drivers and maybe a different USB-C lead might help, you could try running MiFlash and then select the drivers tab and then Install, as some XDA users have had success with this.
I have tried 3 different (Aliexpress) Silicone coated leads and these cause my PC to flag up "unknown device" when in FASTBOOT, i also have 2 leads that look like the most cheapest ones out there and these work OK, even thou some times i still have to switch to another USB socket on my PC.
I run 3 different versions of windows on 3 different partitions that run, Win 7, Win 10 and Win 11 and i am still faced with the same issue regardless of the windows version.
I hope you sort it.

Thanks for the replies and solved it with a new cable. I was using the cable that came with the phone but obviously must have damage somewhere. Thanks anyway.