[PSA] **WARNING** DO NOT TRY TO DOWNGRADE YOUR G4 BOOTSTACK (in USA at least)

RenaKunisaki

Senior Member
Jun 16, 2015
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Cambridge, Ontario
When I wiped out the flash on mine, the repair statement said they replaced the mainboard... Figured they'd just flash it. But it might be a way to speed up the process; just quickly swap the board, fix that board later and use it as parts.

Anyway, so this doesn't apply to every update, only to a few that update the bootloader? So I wonder what they changed? Would be interesting to look at the differences, maybe they patched something that we can use on old versions...
 

waylo

Senior Member
May 9, 2010
1,652
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I received mine with stock 10H. Then installed stock 10N, and then Xtreme 2.0
Dealing with LG and TMO over the phone today about unlocking and so I switched back
to stock rooted 10N and I still have Anti-rollback Version Non-fusing device.
How did you install 10N stock? OTA update?
 

thevmax

Senior Member
But I am having problems...low phone signal over 4G LTE (usually 1 or 2 bars), overheating, high battery usage (1.5 batteries per day), reported garbled/digitized conversations from people I talk to. Yesterday, 09/20/2015, I was talking to LG Tech and he said it looked like my signal down due to the phone being sim locked to T-Mobile. HE called T-Mobile to see if he could persuade them to unlock my phone and they told him to call LG! He said he was from LG!
 

MicroMod777

Recognized Contributor
Apr 23, 2010
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Los Angeles
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But I am having problems...low phone signal over 4G LTE (usually 1 or 2 bars), overheating, high battery usage (1.5 batteries per day), reported garbled/digitized conversations from people I talk to. Yesterday, 09/20/2015, I was talking to LG Tech and he said it looked like my signal down due to the phone being sim locked to T-Mobile. HE called T-Mobile to see if he could persuade them to unlock my phone and they told him to call LG! He said he was from LG!
The LG Tech thinks unlocking your sim will give u better LTE?

Sent from my LG-H811 using Tapatalk
 

waylo

Senior Member
May 9, 2010
1,652
487
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But I am having problems...low phone signal over 4G LTE (usually 1 or 2 bars), overheating, high battery usage (1.5 batteries per day), reported garbled/digitized conversations from people I talk to. Yesterday, 09/20/2015, I was talking to LG Tech and he said it looked like my signal down due to the phone being sim locked to T-Mobile. HE called T-Mobile to see if he could persuade them to unlock my phone and they told him to call LG! He said he was from LG!
Well, maybe you should consider flashing the updated bootstack. Having mismatched radios has caused problems before.
 

thevmax

Senior Member
I don't think that's the problem. This G4 has had phone problems since day 1, with a T-Mobile SIM from the T-Mobile Corporate Store, T-Mobile APN, and full stock ROM, with all the bloatware. That's why I sent it to LG. They could not find any problems with the phone, but they never mention, in detail, what tests they have done. When I had the T-Mobile SIM, I called T-Mobile, and eventually got to Tier 3 level. Even though they offered some things to do from my end, nothing helped.
 

ramjet73

Senior Member
Jan 12, 2006
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Honolulu, Hawaii
I don't think that's the problem. This G4 has had phone problems since day 1, with a T-Mobile SIM from the T-Mobile Corporate Store, T-Mobile APN, and full stock ROM, with all the bloatware. That's why I sent it to LG. They could not find any problems with the phone, but they never mention, in detail, what tests they have done. When I had the T-Mobile SIM, I called T-Mobile, and eventually got to Tier 3 level. Even though they offered some things to do from my end, nothing helped.
Can you re-create the problem(s) at a T-Mobile store? If the issues you are having occur routinely you could call T-Mobile customer service, demonstrate the problem(s) to the staff at the store, and request a warranty exchange. That's what I would do after all the testing and repairs you have done already.

BTW, my G4 is on it's way back with another "repaired" USB port, but I won't receive it until next Tuesday.

ramjet73
 
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ramjet73

Senior Member
Jan 12, 2006
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Not purchased at T-Mobile store, plus, purchase occurred July 22,2015, which was 2 months ago.
According to this page T-Mobile will replace your phone and return it to the manufacturer if it is defective and still under warranty (one year for the G4) for $20. It doesn't state that the phone has to be purchased form T-Mobile but you may have to produce a receipt if it wasn't . Of course you need to be a T-Mobile customer to take advantage of that option and have purchased the phone from an authorized dealer (Best Buy, Walmart, etc.). If either of those is not true I guess you are on your own at this point.

ramjet73
 

thevmax

Senior Member
All T-Mobile does is send the phone is for you with an extra day delay. I've sent my phone in to LG directly, 3 times, and the only thing they found defective was the Power IC was shorted and replaced under warranty. There is no question that my phone is under warranty. LG says they can't find anything wrong with it. But everyone I talk to says that my conversations become garbled or digitized within 20 minutes. T-Mobile doesn't give a s**t! Since I did not buy from them directly they could care, but have decided not to. I have a receipt from Swappa.com. LG would not have covered the shipping and the one repair they did at no charge to me if I wasn't covered under their one year warranty. HOWEVER, it is up to LG's discretion as to whether they will replace or repair the phone. I have no say in that decision.
 

ramjet73

Senior Member
Jan 12, 2006
9,191
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Honolulu, Hawaii
All T-Mobile does is send the phone is for you with an extra day delay. I've sent my phone in to LG directly, 3 times, and the only thing they found defective was the Power IC was shorted and replaced under warranty. There is no question that my phone is under warranty. LG says they can't find anything wrong with it. But everyone I talk to says that my conversations become garbled or digitized within 20 minutes. T-Mobile doesn't give a s**t! Since I did not buy from them directly they could care, but have decided not to. I have a receipt from Swappa.com. LG would not have covered the shipping and the one repair they did at no charge to me if I wasn't covered under their one year warranty. HOWEVER, it is up to LG's discretion as to whether they will replace or repair the phone. I have no say in that decision.
According to the page I quoted earlier, under the warranty exchange program T-Mobile will order a replacement phone and you return the defective phone after the replacement is received, but the phone has to be purchased from T-Mobile or an authorized T-Mobile dealer which Swappa is not. I believe LG has the same policy about authorized dealers and original owner (non-transferrable warranty) so you are lucky that they didn't require a receipt to work on it and unlucky that they weren't able to fix your problem.

From the warranty as covered in the LG G4 owners manual:

(2) The limited warranty extends only to the original purchaser of the product and is not
assignable or transferable to any subsequent purchaser/end user.

ramjet73
 

thevmax

Senior Member
Just for clarification: I do have a limited one year warranty with LG. Luck has nothing to do with it.
They did ask for a receipt which I provided. They also verified that the phone was new and never registered to anyone else. I am covered by LG warranty. I am considered the original purchaser because the phone was new, sealed, and registered by me.
 

Barsky

Senior Member
Aug 23, 2010
1,344
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MintMobile
I have had two 100% satisfactory repair experiences with LG in the last few months,. One when my G3's sim slot died. the last with my bricked due to trying to flash 10h over 10n kdz, G4. I now have it back, fully repaired on 10n. Both times I waited nervously.

They do not appear to waste their time on silly stuff like whether you were rooted, alt-recovery flashed or otherwise. (otherwise including my stupid flash move :) ).

Go through the warranty process and you should end up satisfied.

This has been a moral support message!

P.S. I am not a paid shill :D
 
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