[hovatek]

When a Mediatek device goes totally dead, grounding by soldering gold mount points on the Motherboard (PCB) could help revive it. There are 3 known scenarios that could cause your Mediatek Android phone to go dead and not even respond to charging or the power button. We have so far dropped guides on fixing two scenarios which are:

Scenario 1: Corrupted, wrong or missing Preloader.bin:

The phone could go totally dead when preloader.bin gets corrupted on its own, you flash a wrong preloader.bin, or format in SP flash tool without flashing back the firmware to the phone. See this guide for how to fix this by flashing the firmware for your model and build number.

Scenario 2: Interrupting SP flash tool during flashing:

The phone could go totally dead when there's some kind of interruption during SP flash tool flashing. This could be as a result of you shaking the USB cord, disconnecting due to a slow flashing or SP flash tool popping up an error. See this guide for how to revive the device.

Scenario 3: Flashing a wrong variant

Scenario 3 is different from 1 & 2. Some users of Tecno D5 and Infiinx Not 2 X600 would be familiar with this. In this case, the phone goes totally dead after successfully flashing an incompatible firmware. The fixes for scenario 1 and 2 do not work for scenario 3. 

Warning!
Ensure you have properly tried the fixes for scenario 1 and 2 before considering scenario 3 as you could damage your phone for good if done wrong

Summary

To fix scenario 3, you'll need to join 2 points on the phone's Mother Board then connect the phone to PC via USB cord for flashing.

How to join motherboard gold / mount points on a Mediatek Android device

Follow the steps below to revive a totally dead MTK device by soldering mount points

See the video tutorial below or @ https://youtu.be/jPn4FBAHib0

1. Install Mediatek USB VCOM drivers on the PC
   
2.  Loosen the phone till you get to the Mother Board (The procedure varies with phones so lookup yours)
   
3. On the Mother Board, locate two golden points named GND and KCOLO (see the two red arrows in the image below )
   
   
   
   
   
   
4. Solder a thin wire to the GND point then join it to the KCOLO point
   
5. Connect the phone to the PC via a USB cord just to test; the PC should now recognize it and make a sound.
   
6. Disconnect the phone then flash the right firmware using SP flash tool
   
7. Disconnect the wire from the Mother Board after flashing
   

Credits to Benzalf for sending in the video clip

[gayus]

hovatec can you please pin point the exact location on my deadbrick infinix note 2 x600 there is no label for kcolo pin while the gnd is labeled +6282218880229

[wolfrino]

plz can u show us some support n answewr us about infinix x600 dead after flash n show us that test point location on motherboard or shall we stopp selling infinix phones for customers cuz things like this makes us in troubles n make bad reputation of infinix brand
my fone no +201063633081

[matybazz]

hovatec can you please pin point the exact location on my deadbrick infinix note 2 x600 there is no label for kcolo pin while the gnd is labeled +6282218880229

Have you watched the tutorial?

[hovatek]

hovatec can you please pin point the exact location on my deadbrick infinix note 2 x600 there is no label for kcolo pin while the gnd is labeled +6282218880229

A rep will contact you

[hovatek]

plz can u show us some support n answewr us about infinix x600 dead after flash n show us that test point location on motherboard or shall we stopp selling infinix phones for customers cuz things like this makes us in troubles n make bad reputation of infinix brand

We've not had any volunteer for the X600 issue with hardware knowledge. Let's hope the new set of volunteers qualify.
By the way,  you might want to see the video first

[gayus]

plz can u show us some support n answewr us about infinix x600 dead after flash n show us that test point location on motherboard or shall we stopp selling infinix phones for customers cuz things like this makes us in troubles n make bad reputation of infinix brand

same here bro.... still wait for the answer... this is the main board looks like... i have tried any possible pin but it doesnt work... fyi i am a newbie for hardware troubleshoot

[wolfrino]

i can be a volunteer tell me wat shall i do for help

[Benzalf]

Hey, guys, after soldering the GND and KCOLO plates together with a wire, I tried flashing using SP flash tool and it gave the 'PMT changed for the ROM' error. (Tecno D5)
This happened with both variants of the ROM even after I chose the 'format flash except bootloader' option.
So I decided to select 'format + download' and that's how it worked for me.

[Benzalf]

But note that when you select the 'Format All + Download' option, all the flashable files must be available for loading by the scatter file, else it will give an error saying the ROM backup is incomplete or couldn't find it's path.



To fix this, edit the scatter file to remove the respective addresses of the missing files. In my case, that's the Tecno D5 ROM, SEC_RO and CACHE were missing in the ROM backup.



When that's done, load the scatter file and you'll notice all the selected addresses have their respective files available.


Select 'Format All + Download', click the download button then connect your phone.
Happy flashing, successful unbricking!

Sent from my HTC Vision using Tapatalk