Tuesday, 26 January 2016

How to get a PC detect and MTK device after flashing wrong ROM/Firmware (Test Point method)

Its never wise to flash the preloader.bin file found inside a ROM folder except we are really sure that the preloader.bin is exactly the one for that device. Since we are humans we are bound to always make mistakes hahahahaha you know were I'm actually getting at. 
If you made a mistake and flash a ROM with a preloader.bin file which is not the one of the device, the preloader partition gets corrupted thus making the device not being detected by the PC, boot or even charge ie Dead Boot. Since it cannot be detected, there is no way you can reflash the phone even when the original ROM of the device is now available.
This post will show you how you can get your PC to be able to recognize the device again if its in such situation. This process to repair dead boots of mtk devices is known as Test Point.

Disclaimer
Romkingz is not responsible for what ever may happen to your device after using this procedure
Do this at your own risk!

First you will have to loose the screws of the phone and take out the board.
Then on the board, you will find golden points with various labels like Tx, Rx, Vcc, KCOLO, COLO, KOLO, GND etc

Now locate a golden point with lable KCOLO or KOLO or COLO on the board. Sometimes these points are found at the volume terminal.
Solder a wire on that point (KCOLO, KOLO or COLO)
Locate the golden point with GND or normal ground on the board.
Join the wire form KCOLO or COLO or KOLO to GND on the board.
After joining this 2 points, connect the device to the PC and see if it detects.
If it doesn't, look for another golden point with same label till your device gets detected by PC.

When your device is detected by PC, it shows as MTK USB COM inside device manager.
Now you will have to quickly flash the original preloader.bin file or complete ROM.
After a successful flash process your device, you can now cut off the wire which you connected.
Couple back the phone & Reboot.

Points to note
Never use the Tx, Rx, Vcc or any other point that carry some amount of voltage

Hope this method works for you

Please if you have a working test point of a device kindly send the images so I can share to help others

33 comments:

  1. my friend killed one phone.imma try it out and see

    ReplyDelete
  2. my itel 1402 over heats at the top around the camera and the speak
    how can i fix this or who can help me out?
    by the way? can i recover it or i should just buy another

    ReplyDelete
  3. hi!
    my smart mini s620 ( IMEI1:352509071395309 and IMEI 2: 352509071395317) dead after formatting.It can not be detected by computer. I have tried to look for (CKOLO, KOLO or COLO) points on the motherboard there is not something like that. But the "GND" point is there. I don't know how to fix my phone please help me!!!

    ReplyDelete
    Replies
    1. turn the other side of the panel , u will find d kcol etc

      Delete
  4. hi bro,
    I downloaded rom for my tecno 8H here and used to flash my phone as per your instruction but now the phone is dead, but I don't wanna lose it yet...Please, is anything wrong rom I downloaded

    ReplyDelete
  5. you guys should always note that...

    reading of instructions inside the ROM downloaded is highly of important..
    though Amparas Tking is the best ever so far... we need to have the contact foe easy guidance, because of our English is not understandable
    thanks
    www.facebook.com/mjadadi
    +2348067028216

    ReplyDelete
  6. hellooo every one am new here and happy to be among u guys. ok my pb is as follows my itel 1353 hard bricked after aflashing process so i poened it and i saw the GND pin but no kCOLO ,KOLO, COLO pin. My question is can i taste e very pin at the volume contrl terminlas?

    ReplyDelete
  7. I've been having issues on flashing of itel phones i've never done anyone successfully before, pls how can you be of help. contact my mail for help. ademolatemitope90@gmail.com

    ReplyDelete
    Replies
    1. Maybe you are using research download instead use upgrade download

      Delete
  8. This comment has been removed by the author.

    ReplyDelete
  9. Can't locate the ckolo line on tecno m3 pls help

    ReplyDelete
  10. me too, I can't locate this point on wiko darkmoon

    ReplyDelete
  11. Me also i found KCOLO i connect the cable with GND but it it began to download,after show the red color,it stopped to progress,My phone is TECHNO P5.how i can do??Help me please.

    ReplyDelete
    Replies
    1. The file you are using is still not for your device that's why is still stops a the red br. use another flash file

      Delete
    2. Boss,it is very painful that you don't use to answer my questions,here n there,pls do answer. duroabey@yahoo.com

      Delete
  12. @adex i can assist u...
    Whatsapp 08185258526

    ReplyDelete
  13. Thanks for the tutorial it worked on gionee m3 like magic

    ReplyDelete
  14. I have lenovo A536 I cannot find GND on it plz tell me where it is

    ReplyDelete
  15. I have lenovo A536 I cannot find GND on it plz tell me where it is

    ReplyDelete
  16. sir does it work on huawei y220-U00?

    ReplyDelete
  17. please i need help to recover my phone badly. i have philz touch recovery on my phone and then with root. later i saw and ota update of about 24mb and it said to update i need to remove root. i did that, downloaded the update and asked it to install. then the phone rebooted and took me to recovery mode of which it said the opening the update package failed and installation aborted. now if i reboot the phone, it doesnt boot but simply takes me to the recovery. i have flashed backed the stock backup yet it wont boot instead it takes me back to recovery. i dont know if my mistake was to leave a custom recovery while update via ota. worst is my usb cant be detected by computer any longer. i dont know if its the kernel that is corrupted. please help me seriously. thanks in advance.

    ReplyDelete
    Replies
    1. Try and change your USB port so you will be able to flash your phone back with pc
      For the main time, look for a custom ROM that works properly on your device and install via philz recovery

      Delete
  18. please i'm having the same problem with my tecno p5, i flash wrong rom and my phone and enter hard brick which i've try everything that i see on net but nothing seems to work out. i try connecting kcolo to grn but yet pc cant detect my phone but when i insert batt with the phone still plug on my pc, it displayed on the screen (1) recovery (2) fastboot and (3) normal but non of the keys are working. please what should i do

    ReplyDelete
  19. please i'm having the same problem with my tecno p5, i flash wrong rom and my phone and enter hard brick which i've try everything that i see on net but nothing seems to work out. i try connecting kcolo to grn but yet pc cant detect my phone but when i insert batt with the phone still plug on my pc, it displayed on the screen (1) recovery (2) fastboot and (3) normal but non of the keys are working. please what should i do

    ReplyDelete
  20. If you ever find yourself in the situation when you need to locate your phone, just read this content on flexispy for phone, and your worries will disappear.

    ReplyDelete
  21. i plugged in my tecno y3 to sub-woofer it went off suddenly, i tried to power it on but nothing comes out of the screen.....help plz

    ReplyDelete
  22. Sir,where is Colo point in micromax canvas a110 pl help

    ReplyDelete
  23. heloo bro i am short the gnd and kcolo bu t still it cant detected by pc no beep

    ReplyDelete
  24. hi
    I need Rom Htc Desire 820
    model : 0PFJ400 d820n
    Please i need these RUU firmware necessary
    HTC 820n
    RUU_A51_UL_L50_DESIRE_SENSE60_MR_HTC_Europe_2.10.4 01.2
    Please i need these RUU firmware necessary
    for HTC 820n

    Please Please Please Please Help whtssap +212644903255

    ReplyDelete

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