LG G4 stuck in bootloop

kartalgurhan

Senior Member
Dec 30, 2008
255
74
0
I hereby confirm that I have tried the same things with no success...

Last Update: 14/01/2015 - LG refused warranty repair due to the device being rooted
Solution (Clean Software): RMA to LG or place of purchase
Solution (Modified Software): Find some paper to weigh down
Solution (General): Don't buy LG's Hardware - quality control is questionable at best

Although some people have reported getting some functionality back, no such luck for myself and majority of others.

What I didn't try;


-Flashing MM20b - any method
-Flashing MM20c - any method

in fact, not even checked that they exists :p (no phone, lg has it!)

Don't think it was about when I was trying to recover (?) - I also highly doubt that flashing these will help you :eek:

Click the show content button to see what was tried and updates on the RMA. Pre-warning, this is my journey starting 12th December and is all condensed to 1 post.


12/12/2015

+1
12 hours ago while sending a text my phone restarted. I logged back in to write the text again, it restarted then bootlooped.

H815EU
unlocked bootloader
TWRP
Root
S/N 506xxx
Attempted Fixes:


1) Tried using LG bridge

-it says its updating to marshmallow (succeeds)
-then sits at LG boot screen without looping
2) Flashtool 2014 - Europe OPEN H81510D.kdz

-said that it couldn't connect to server
-clicked ok
-clicked retry
-says S/W update in progress
-stopped due to an error
-This is on my main PC, had issues with Flashtool before, will check on my laptop and feed back
-Fails on 9%
3) LGUP

-Only see's my device when I enter download mode
-Says my device is unknown so won't do anything with it
-Restarted Computer
-Wants a .tot not .kdz, contrary to the guide posted - out my depth, whats the difference between a kdz and a tot?
-Click on upgrade
-Chose Europe OPEN H81510D.kdz
-Close and reopen LGUP
-Making sure Refurbish is chosen (kdz should still be active file)
-Click Start
-80% Reboots, Reboots, reboots, reboots...
-100% "Click here to continue" on computer
-Reboot
-Bootloop
4) Longshot

-now I assume that I'm back on lp, moving back to step 2 Flashtool 2014
-Connection to server failed
-ignored
-seconds later it starts flashing
-Bootloop
5) LGUP

-Same as 3 above, but with MM H81520a_00.kdz
-Complete
-Bootloop
-repeated to go back to Europe OPEN H81510D.kdz

12/12/2015

-I assume that in the uk the MM update was rolled out for the carrier free G4 and my phone chewed it up and then choked on it
-If someone figures it out let me know, otherwise its time for a new phone :/

-apparently you can use adb while LGUP is connected, might try it at some point, had enough for a couple hours
Updates



15/12/2015

GiffGff quickly give me a reference to send the phone back to them

@nashant recommended LG customer services (for those of us in the UK). Straight to LG, better option than via Giffgaff I feel.

0344 847 5454
http://www.lg.com/uk/support

Customer support were brilliant DPD out tomorrow to collect my phone. I will update as necessary. Take down your imei before sending it off
17/12/2015

DPD have collected my mobile. Fingers crossed!
22/12/2015

At the repair centre since 18/12/15 awaiting repair
04/01/2016

LG phones helpline is really busy - offering callbacks. I got one, they lost my phone :/
05/01/2016

Turns out LG are that busy with returned phones at the moment, warranty repairs are being sent to none warranty repair centres - mine is at SV (?) - This is why they couldn't find my phone. Make sure that you take down your imei number before you send it off, seems this is how they track phones internally, not by your reference number. I am assured that SV (?) are going to do a fantastic job and I should get my phone back next Monday.
11/01/2016

LG haven't had an update from the repair centre... they are chasing it and will get back to me by Weds/Thursday.
Interesting part of the conversation, the person on the phone had said to me

Agent "Do you know its gone to the out of warranty repair centre.."
Me "Yes, I was told that it was so busy that they had to but I would get same quality repair"

I am hoping this isn't because of an unlocked bootloader, especially with the issue being duff hardware. Although this hasn't even been mentioned so far.... Starting to worry now. My house is full of LG electronics but I might not be using them again... !
14/01/2016

LG have refused the repair

I now have a fairly expensive paperweight and will never buy anything from LG electronics again, that annoyed I might even get rid of the tv and home cinema, seems a good time to upgrade to 4k anyway ;)

Been bouncing back to Giffgaff all day re the consumer rights act in England and the EU directive. They seem to think as a retailer that they have no responsibility.

Which is a UK Consumer champion with extended rights, it discusses the Consumer Rights Act at that link.

"If you discover the fault within the first six months from delivery, it is presumed to have been there from the time of delivery - unless the retailer can prove otherwise."




I am Hopeful that everything else will be smooth. +rep to @nashant for the recommendation re LG customer services.

dentralp
 
Last edited by a moderator:

nashant

Senior Member
Feb 7, 2011
62
9
0
London
They only offered to repair my phone, which would take up to 14 days apparently
Where are you? Maybe UK customer service is better. Does help that we have a 1 year manufacturer's warranty over here, I guess. H815AT bought from Three Mobile in May. Maybe it helped that I mentioned that there seem to have been quite a few people who had this issue crop up towards the end of last week. Seems like quite a coincidence.
 

Ali Mirza

Senior Member
Jun 20, 2014
230
61
0
Hyderabad
WTH! repair motherboard for 300 dollars

My G4 H815T Hong Kong version bought here in the Dubai UAE, called AlYousuf service center for LG,they are willing to charge at 300 dollars! LG wasn't supposed to replace motherboard for free? my serial number being 506, i've been too affected with annoying boot loop and unable to format the phone or anything! i was on Marshmallow stock build V20b? I think Dubai only sells H818/P variant, not sure about H815 variant! :mad:
 

hikku13

Member
Nov 20, 2009
41
7
0
Mine H818P with S/N 505, manufactured on May. I got bootloop 14 days ago, after 5 months of using and sent it to LG service center. They said approximately a week but it took couple week and I just got it yesterday. They said the mainboard was replaced. I asked the CS (or technician, can't tell from their uniform) he said it was replaced with new mainboard with latest production line (October they said, I can't confirm).
Now, I have a huge doubt and afraid to keep using it for the next few months. If this going to happen again, I'm out of luck with expired warranty. I cannot afford to lose my data, communication, and few hundred $. Maybe I will sell it and get another flagship phone before the selling price drop too low. Too bad, its certainly a great phone but unfortunately I'm disappointed now.

---------- Post added at 09:58 PM ---------- Previous post was at 09:40 PM ----------

Anyway can we start new thread to poll the S/N and production line date with bootloop problem (and already got the mainboard replaced)? I want to know the stats.

Is there any official announcement from LG (or something on H/W) that can assure that the new replacement motherboard will not have the defects as the older one?
 

Ali Mirza

Senior Member
Jun 20, 2014
230
61
0
Hyderabad
Worried if it can be repaired under in-box warranty

My H815T (hong kong version) being purchased from a grey market in Dubai, there's in-box warranty in original box, i'm worried that LG only repairs H818 variant only :( , I'm having annoying boot loop and checked my IMEI that my phone is 6 months old prior to manufacture date. Should I send my G4 to LG Hong Kong to replace motherboard for free? Hate to see the situation of G4 like this!
 

dplane

Senior Member
Apr 30, 2012
462
157
0
Motor City
When I read about these issues here and on reddit I thought this was a very isolated thing but I just got hit by the sudden shutdown and bootloop on my VS980 hw rev1.0...

Between the gps chip issues the G2 and now this on the G4 I will definitely not buy another LG phone anytime soon. Quality control seems to be non existent.

Has anyone had experience dealing with this issue in the US and or on Verizon? Getting a refurbished one instead would piss me off.. Especially after going through the **** show with the G2 before.
 
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Yotam.B

Member
Aug 7, 2007
12
0
0
The same problem. H815.
Never did Root or something.. Like the original.
The device not enter ot Recovery mood :(

Is there any chance of saving the information stored on the device?

Thank you for helping!
 

Larry Johnson

Senior Member
Mar 19, 2015
63
7
0
It's kinda getting scary. korean forums are filling up little by little, everyday now, with boot looping g4's and motherboard replacements.

One of the commenters said he had asked the service person about it, and he said that it could be either the internal storage memory chip problem, or firmware problem. But no official word on it yet.

Most common is after updating to MM. Maybe something in the new code is killing the internal storage chips? that would explain the motherboard replacement. I mean, if it was a firmware problem, they could easily reflash it with lollipop or something.

g4's internal memory is by toshiba nand. Normally if a storage gets screwy, you can reformat it and everything would be fine. but if the damage is extensive where a format wouldn't fix it, such as from overheating, then a motherboard replacement is the only option.

all i know is that my g4 is made in april and I haven't updated to MM. I'm sure I'm gonna eventually update to MM, but I don't want it to be a gamble. lol.

but as I mentioned in an earlier post, this also happened to some people who didn't update to MM yet.

my warranty us up I guess end of march, so i better do an update by then and use the phone heavily to see if it'll break. such a shame. it's a nice phone.
 
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DrZune

Member
Jan 17, 2011
38
8
0
Same issue just happened to me. My phone is H811 (T-Mobile) with an SN starting with 505 and manufacture date of 05/15. Contacted TMO and after going back and forth with somebody that didn't understand what a bootloop was they finally agreed to sending me a replacement.
 

verluci

Member
Nov 12, 2015
14
11
0
Groningen
Update: I have sent the phone back to my carrier (bought it via them and in The Netherlands the seller is responsible for the warranty) and it seems that they will replace it. There does not seem to be a software fix though.
 

JiDey247

Member
Dec 15, 2015
22
0
0
This happened to me 2 weeks ago. I tried everything even a factory reset after 2 nights of bootloop. nothing worked so i brought it to LG they will repair it.