Nexus 4 USB Issue

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cyanisblue

cyanisblue

Senior Member
May 9, 2012
106
142
Auckland
I'm having a problem with my Nexus 4 that when I connect it to my laptop, I get a message saying "one of the devices attached to this computer has malfunctioned" and shows as "Unknown Device" in device manager. It doesn't show up in my computer. I've made sure MTP is enabled on the phone. I've tried different cables, tried uninstalling drivers and installing the latest official usb drivers. I've tried another computer and same problem. I found this thread saying that it could be a hardware problem. Phone is still under warranty but I have bootloader unlocked and a custom recovery with a stock rom but with no way of returning to complete stock.

Any ideas? Any help is much appreciated.
 
Last edited:
uchihakurtz

uchihakurtz

Senior Member
Jan 5, 2013
755
221
Depok
Samsung Galaxy S21
cyanisblue said:
No my laptop is running Windows 7 and also tried it on a Windows 8 Laptop.
Click to expand...
Click to collapse

Yeah, most probably hardware failure on the phone. You can return to complete stock by following this guide, unroot, then locking the bootloader I think. There should be guides everywhere in the forum. After that you can claim warranty, some places doesn't even check the state of the phone but just to be safe. Good luck dude.
 
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cyanisblue

cyanisblue

Senior Member
May 9, 2012
106
142
Auckland
uchihakurtz said:
Yeah, most probably hardware failure on the phone. You can return to complete stock by following this guide, unroot, then locking the bootloader I think. There should be guides everywhere in the forum. After that you can claim warranty, some places doesn't even check the state of the phone but just to be safe. Good luck dude.
Click to expand...
Click to collapse

How can flash factory image and lock bootloader if I can't get adb/fastboot to work? It won't recognize the device at all.
 
cyanisblue

cyanisblue

Senior Member
May 9, 2012
106
142
Auckland
uchihakurtz said:
Oh right, dang. I think the work around is to find a flashable zip of stock ROM and maybe an app that can relock bootloader directly. I'll try finding some when I'm surfing.

Sent from my blazing fast Nexus 4
Click to expand...
Click to collapse

I found this app which can lock the bootloader and I've found a flashable stock 4.4 recovery.

Which order would I do all this in.

Would I flash stock 4.4 recovery zip then run lock bootloader app then full unroot in supersu?

Edit: Bootloader is locked and stock recovery installed now, all that's remaining is supersu which I can just use the unroot function.
 
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    uchihakurtz
    uchihakurtz
    cyanisblue said:
    No my laptop is running Windows 7 and also tried it on a Windows 8 Laptop.
    Click to expand...
    Click to collapse

    Yeah, most probably hardware failure on the phone. You can return to complete stock by following this guide, unroot, then locking the bootloader I think. There should be guides everywhere in the forum. After that you can claim warranty, some places doesn't even check the state of the phone but just to be safe. Good luck dude.
    View
    1
    uchihakurtz
    uchihakurtz
    cyanisblue said:
    How can flash factory image and lock bootloader if I can't get adb/fastboot to work? It won't recognize the device at all.
    Click to expand...
    Click to collapse

    Oh right, dang. I think the work around is to find a flashable zip of stock ROM and maybe an app that can relock bootloader directly. I'll try finding some when I'm surfing.

    Sent from my blazing fast Nexus 4
    View
    1
    cyanisblue
    cyanisblue
    uchihakurtz said:
    I think it's safe to lock the bootloader then unroot, since unlocking bootloader is only used to install custom recoveries not rooting.
    Click to expand...
    Click to collapse

    I ended up reflashing stock leaving the bootloader locked and then flashing stock recovery after. I'm going to take it back later this week.

    Thanks for your help.

    Sent from my Nexus 7 using Tapatalk
    View
    1
    uchihakurtz
    uchihakurtz
    cyanisblue said:
    I ended up reflashing stock leaving the bootloader locked and then flashing stock recovery after. I'm going to take it back later this week.

    Thanks for your help.

    Sent from my Nexus 7 using Tapatalk
    Click to expand...
    Click to collapse

    You're welcome bro, good luck and I hope your mako gets well soon ;)
    View

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