Introduction: LG G4 Bootloop Fix | How I Unbricked It.

Picture of LG G4 Bootloop Fix | How I Unbricked It.
  1. First, remove all the screws holding the plastic covering.
  2. There are 11 screws in total.
  3. See step by step video below

LG G4 Bootloop Fix



Step 1: Use Soft Plastic Tool

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Next, use a soft plastic tool to pry open the G4.

These tools allow you to open without scratching or damaging the device's edges

Step 2: Remove All Connectors

Picture of Remove All Connectors

Next, disconnect all connectors.

There are 3:

  1. USB Port
  2. Rear Camera
  3. Front Camera

Step 3: Remove the Board

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Remove the entire circuit board from the plastic casing.

This is quite easy after you have disconnected all the connectors.

Just use the same plastic tool to first lift an edge.

Then remove the heat shield.

Step 4: Apply Heat to the Chipset

Picture of Apply Heat to the Chipset

Finally, use a blow dryer/hair dryer to apply heat to the processor for approximately 10 minutes.

After this, put your G4 back together and test.

If after trying this your G4 still remains bricked, not to worry, just repeat the process. It took me a few trials.

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Comments

BrunetRichard (author)2017-09-09

I forgot to say that I first tried the freezer trick for 2 hours in a little sealed plastic bag.It didn't work for me.

BrunetRichard (author)2017-09-09

I got a LG G4 too that stopped working 2 days ago. I bought it brand new 2 years ago. I first tried to put the motherboard inside my oven at 200 F for 5 minutes as proposed by some of you. It didn't work. Then I tried at 250 F for 6 minutes thinking I had nothing to lose. And it worked! Hopefully it'll last!

ChrisB880 (author)2017-07-23

I wasted 3 hours trying various things on my LG4 as suggested on the web but nothing worked. Luckily I didn't go for the hard reset option. Then I removed the battery, pressed the "on" button for 60 seconds, reinserted the battery and placed the whole darn thing into the freezer (in a plastic bag) overnight. When I took it out the next morning it started up without a hitch and it has been working well since. Keeping my fingers crossed...

LisaBR (author)ChrisB8802017-08-13

Thank you!! My G4 was stuck on the android page with no blue light flashing at all. I followed exactly what you did (except only left phone in freezer for 3 hours) and got the phone to turn on ... downloaded one year of pictures. Got a new phone : ) so not sure if the fix is permanent or not.

rafununu (author)2016-11-17

I'm not convinced. To be honnest I don't see why "resoldering" the chip could fix any software or firmware problem. An hair dryer doesn't produce enough heat to melt the solder, a heat gun is needed but if you use a heat gun for 10 minutes you'll lost all your components !

MaxxB4 (author)rafununu2017-08-03

its a hardware issue not a software one.

Nematic! (author)2016-11-16

heating a chip to solve bootloop ? :/
You can simply fix it from fast boot or recovery

RecarroJames (author)Nematic!2016-11-16

Trust me, we tried all that and it didn't work. Was astonished to find out heating with a blow dryer aided in it operating once again.

YuriB14 (author)RecarroJames2017-04-18

Is the solution temporary of permanent, did it have the same issue again?

MehdiR13 (author)Nematic!2017-01-13

hony when it got bootloop you cant have fast boot or recovery by the way most lg va the bootloader is locked so you cant ane recovery and its true with heating chip is again performs well/

ledmod (author)Nematic!2016-11-16

Hi, if I remember correctly, many LG g4 had this problem due to some bad soldering contact, so it's a hardware fault :s

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