Soft Brick vs Hard bricked vs Broken of an Android device
and repair your own device
Soft brick is the state of android device which occur due to some software problems like boot loops or phone freezing at some point during boot. This only occurs if some software problem occurred in the device mainly during OS upgrade or ROM flashing.
If your device is in such state then you are luck there are 99% chances that you can recover your beloved device without needing any professional help or spending hundred of dollars. Just follow these steps
Hard brick is the state of android device that occurs when your device won’t boot at all i.e. no boot loop,no recovery and also not charging. This occurs due to trying to flashed firmwere not made for your device or flashed incorrectly. This is more difficult to resolve and often require professional help.
in MTK Android there is many Partitions in your phone. like Preloader, Recovery, Bootimg etc….. if somehow Preloader get Corrupted then you phone will not able to DETECT WITH PC !!! in other words you will have phone with BOOT DEAD.
How Preloader get corrupted?
There could be few reasons but main reason could be that someone or you Flash your complete phone (include Preloader) with wrong files or with wrong ver. Also there could be reason someone Delete Preloader or you Deleted.
How should i know my phone have preloader dead ?
Preloader can be dead if some one Flash it wrong and after flash your mobile will not detect with pc any more. for confirm
1. sp flash tools does not detect your phone anymore and also the computer does not as there is a pop sound when usb is connected to device
2. open device manager
take battery out from phone
and check is computer detecting any device
If it’s not detect then you have phone which Preloader is dead AKA Boot Dead
How can i repair it?
1.screwdriver (by which you can open the screw from handset)
3.a usb cable
4.a copper wire( for sold test points)
5.a pc with sp flash tool,mtk drivers and stock firmwere for your mobile
now you have to disassemble your phone and take pcb out. check there should be some Golden points. check these points there should be written on them Rx,Tx,GND,Vcc,Vcharge etc… check there should be written “COLO” or “KOLO” or“KCOLO” you have to Sold that point with GND After Sold Attach usb now your phone will detect with USB !! and now ready to Flash.
In some phones “COLO” or “KOLO” or “KCOLO” not written for those type of phones you have to test all points one by one Short Golden point with GND and attach usb cable which point short with gnd can able to detect your phone by pc isForce Preloader Mode Test Point !! Keep in mind Don’t Short Vcc,Vcharge or any other pin which have 4.x Volts also i had tested “Colo” or “Kolo” or “KCOLO” don’t have any kind of volts.
hear the two images are taken from 2 different device for identifying the GND and COLO OR KOLO OR KCOLO points
Broken Broken is a state of android device that occurs when any hardware component of device break down. This may occur due to electrical over charge, device dropped, water spilled etc. This require the electrical component being repaired or replace and does not occur due to any non supported software installation.
Credits: Me (subho ahmed)
data and the images are collected from google and TELECOM INOX (Mobile&Laptop Repairing Training Institute)