Develop Bugs

"Enter PIN/password to decrypt", "30/30 attempts remaining"

hello all,
i bought an lg g3 from ebay used one ,
i got this message when i turned on the phone
"Enter PIN/password to decrypt", "30/30 attempts remaining"
also when i put a sim card i got this message
"this phone is permanently locked and cannot be unlocked "
tried to do factory rest got error
emmc error 150
then tried to flash anew stock rom its stuck at 6%
device D850 at&t LG g3
Regards

Return the phone. Open a dispute for having your money back.
Whatever.

I also had same problem , i tried calling ATnT and they connected me to LG , LG said they have not even heard about it and as my phone is out of warranty (15 months), they cannot do anything about it.
Finally i showed this phone to a local cellphone repair shop in India, and they found it was a problem with numerous pattern incorrect entries , called as pattern lock and it can be undone by software unlock. Just few bucks.

Did you use the .tot restore method? As long as you can get into the boot loader you should be able to do a complete flash. Check out the guide here
Either way, it sounds like the seller of the phone may have gotten ransomware, or just knowingly sold an encrypted phone. The seller shafted you and you should leave negative feedback and also do what joooe said, and open a dispute immediately.

If you flash ROM LineageOS 14 on your device, doesn't exist this problem.

I had this problem
I used latest rom for my phone region (UAE) and flashed (refourbished) by UPPERCUT_1.0.0.0
and my problem solved.

Cannot unlock bootloader on a repaired H815

My bootloader unlocked H815 suddenly froze (hard bricked) with no response to anything other than the boot screen.
Sent it for repair. They replaced the CPU and RAM. The repaired H815 came back locked with 10C.
The IMEI stayed the same, but the device ID was changed (fastboot...devic-id).
When trying to obtain a new UNLOCK.BIN file on the LG developers site, I get the message that my device ID does not match.
I managed to root the H815, but I cannot install a recovery (TWRP). This prevents me from installing any ZIP file since I have no access to recovery (XPOSED, V4android, etc.).
Please advice
Thanks

Anyone?

U should email lg developer for help.. I saw a lot of people facing this problem also

Sent my IMEI and new Device ID to LG (via LGE Developer site)
waiting for the new key file
Waiting for the Sקמא צט

I just sent a mail to developer (at) lge.com with the same problem. The IMEI stayed the same, but the Device-ID changed when they replaced the motherboard. I had unlocked my g4 before it went in repairs. Actually the combination Genesys MM with xposed 79, G4 tweaksbox, the lack of recovery installed and USB debugging disabled is what hard bricked my phone in the first place. Something made LGUP unable to find the model of the phone.
I will update this post with any response I get from the email.
UPDATE:
It worked. They asked me to send a photo of the back of my phone (with IMEI number). After that they said I could try again and that the site should now give me the unlock.bin. It did.
Thanks LG!

G4 H815 IMEI shows as Sprint G3?

I have bought an LG G4 that has some issues. The previous owner took the phone to some unofficial repair centers and now I have difficulty in even identifying the model of the phone. Now:
1. In the Settings, About the phone, Hardware info, the phone's model is listed as LG-H818
2. CPU-Z reports the device as LG G4(LG-H815). The board is msm8992.
3. Likewise, AIDA64 reports the device as LG-H815.
4. When I take the back cover, I see H815 stamped in three places at the top of the device, just above the camera module.
5. When I take the battery out, the sticker says LG-H815 but when I check the IMEI number, it shows up as belonging to LGLS990, which is Sprint LG G3! I have checked via imeidata.net and also LG CSMG Tool. Both give the same result.
6. In fastboot mode, the device shows up as locked. I registered with LG Dev. Found out about the device id and when I try to get the unlock code, it gives me this error: "Device ID is unmatched. Please check your Device ID. Your account will be locked if you enter the wrong Device ID more than 9 times."
What do you think could be going on here? Is this a refurbished device with a phony IMEI number? How can I unlock this device?
Thanks for all your help and advice.

Refurbished probably, send LG support email and they will send you unlock code

szaim said:
I have bought an LG G4 that has some issues. The previous owner took the phone to some unofficial repair centers and now I have difficulty in even identifying the model of the phone. Now:
1. In the Settings, About the phone, Hardware info, the phone's model is listed as LG-H818
2. CPU-Z reports the device as LG G4(LG-H815). The board is msm8992.
3. Likewise, AIDA64 reports the device as LG-H815.
4. When I take the back cover, I see H815 stamped in three places at the top of the device, just above the camera module.
5. When I take the battery out, the sticker says LG-H815 but when I check the IMEI number, it shows up as belonging to LGLS990, which is Sprint LG G3! I have checked via imeidata.net and also LG CSMG Tool. Both give the same result.
6. In fastboot mode, the device shows up as locked. I registered with LG Dev. Found out about the device id and when I try to get the unlock code, it gives me this error: "Device ID is unmatched. Please check your Device ID. Your account will be locked if you enter the wrong Device ID more than 9 times."
What do you think could be going on here? Is this a refurbished device with a phony IMEI number? How can I unlock this device?
Thanks for all your help and advice.
Click to expand...
Click to collapse
Check iemi in about device i believe network area should give the real iemi there. Prob is a refurb. Or in worst case a stolen with modified iemi if the iemi in settings is diffrent check it on swappa if the same like prev poster email lgdev they can update it

Thanks for the replies. I have spoken to an experienced technician today. He said my device was probably put together in China with a motherboard from here and chassis from there etc. So it looks I have been scammed.

szaim said:
Thanks for the replies. I have spoken to an experienced technician today. He said my device was probably put together in China with a motherboard from here and chassis from there etc. So it looks I have been scammed.
Click to expand...
Click to collapse
I have read a few articles about "knock off g3s and g4s" and thats about what they do id send it back if its an option
Its not the item as described and should be eligable for a return

do you have this phone ?
you can check it by IMEI

Reusing a LG Bootloader unlock.bin token

So my LGG4 is off getting repaired due to the dreaded bootloop issue. Once I have it back I plan on unlocking the Bootloader and rooting again. I have heard issues whereby repaired G4's get the 'DeviceID unmatched' error when applying for a unlock token via the LG website. I understand you can contact LG to get this rectified; however I have found the email from LG I got when I first unlocked the Bootloader, with the unlock.bin file attached.
My question is: Should I run into any DeviceID issues during the unlocking procedure, can I reuse this file to unlock my Bootloader, or do I need to go through the process to get another re-sent? The email details a specific DeviceID so my initial thought is a No, but I did wonder (hope) this number is just used to generate a generic token that is matched via the IMEI? Any help much appreciated.

CyanideJack said:
So my LGG4 is off getting repaired due to the dreaded bootloop issue. Once I have it back I plan on unlocking the Bootloader and rooting again. I have heard issues whereby repaired G4's get the 'DeviceID unmatched' error when applying for a unlock token via the LG website. I understand you can contact LG to get this rectified; however I have found the email from LG I got when I first unlocked the Bootloader, with the unlock.bin file attached.
My question is: Should I run into any DeviceID issues during the unlocking procedure, can I reuse this file to unlock my Bootloader, or do I need to go through the process to get another re-sent? The email details a specific DeviceID so my initial thought is a No, but I did wonder (hope) this number is just used to generate a generic token that is matched via the IMEI? Any help much appreciated.
Click to expand...
Click to collapse
u have to update with lg as the device id will be diffrent u have to let them know that u sent it in for repair and need ure device id updated in there systems

TheMadScientist420 said:
u have to update with lg as the device id will be diffrent u have to let them know that u sent it in for repair and need ure device id updated in there systems
Click to expand...
Click to collapse
As I suspected, thank you.

CyanideJack said:
As I suspected, thank you.
Click to expand...
Click to collapse
Lol only reason i knew is cause i came across sam prob a few times now as u can suspect. Ive never heard of any problems with anyone and lg doing this. Should be pretty straight foward. Call em. Might have to goto a higher level of tech service not sure
Im just assuming standard support level is not very supportive lol.

This depends on how they fix your device.
Carphone Warehouse in the UK fixed mine by swapping the mainboard to a 701,
They did not tamper with the IMEI or Device ID's on the replacement board and swapped the sticker under my battery cover to reflect the new details.
I did not need to contact LG as i just requested an unlock for the new IMEI and Device ID Pair.
Hope you get sorted

OllieD said:
This depends on how they fix your device.
Carphone Warehouse in the UK fixed mine by swapping the mainboard to a 701,
They did not tamper with the IMEI or Device ID's on the replacement board and swapped the sticker under my battery cover to reflect the new details.
I did not need to contact LG as i just requested an unlock for the new IMEI and Device ID Pair.
Hope you get sorted
Click to expand...
Click to collapse
i was assuming lg done his i didnt even know aftermarket companys did the repair authorized of coarse
they had to pull the device id off of the old one and program it to the new one so technicly they did tamper with it
they may have been able to pull the info from the imei i dont know but my note 5s device id changes from rom to rom sometimes and i have to update it with the company who unlocked it so it holds same imei
just trying to wrap my head around how they got uree bootlooped devices id as it can be changed even if iemi stays the same

TheMadScientist420 said:
i was assuming lg done his i didnt even know aftermarket companys did the repair authorized of coarse
they had to pull the device id off of the old one and program it to the new one so technicly they did tamper with it
they may have been able to pull the info from the imei i dont know but my note 5s device id changes from rom to rom sometimes and i have to update it with the company who unlocked it so it holds same imei
just trying to wrap my head around how they got uree bootlooped devices id as it can be changed even if iemi stays the same
Click to expand...
Click to collapse
I got a new IMEI and Device ID and just went through the unlock proceedure again with this new info.
Thats what i meant by them not tampering with it, I got a new device with my old casing/screen.
They did not transfer my IMEI or Device ID to the new board.
CPW are authorised on behalf of LG to repair the device and since i bought it from them it was easier/safer for me to take it into a store.

OllieD said:
I got a new IMEI and Device ID and just went through the unlock proceedure again with this new info.
Thats what i meant by them not tampering with it, I got a new device with my old casing/screen.
They did not transfer my IMEI or Device ID to the new board.
CPW are authorised on behalf of LG to repair the device and since i bought it from them it was easier/safer for me to take it into a store.
Click to expand...
Click to collapse
Lol i see now.

Error Code: Secure boot 1002 - What should I do? Please help

Dear XDA community
I recently bought a LG G4 from an online retailer. According to their website they said it was a UK model, which according to the back of the phone beneath the battery it is: LGH815. But then after booting the phone the ROM being used was: LGH815T. Then I typed in the IMEI number and found out it was a: Verizon US model??
Basically I am having trouble identifying my model. The phone apparently came unlocked and rooted, but the person who sent it must have done something wrong because when I flashed a TWRP recovery image to the phone it comes up saying: secure boot error code: 1002.
The good thing is, is that I can boot into the device and still operate it as per usual. But what I want to do is bring the recovery back to normal. I was searching around and apparently there are some KDZ files that can be used just to flash the recovery? Is this correct? If so could you assist me in what I have to do to fix my issue which is: secure boot error 1002.
I would really appreciate any help regarding the matter. :crying:
Tried posting photos, but forum would not let me, all they showed was the model numbers.
Jesse

Higsley said:
Dear XDA community
I recently bought a LG G4 from an online retailer. According to their website they said it was a UK model, which according to the back of the phone beneath the battery it is: LGH815. But then after booting the phone the ROM being used was: LGH815T. Then I typed in the IMEI number and found out it was a: Verizon US model??
Basically I am having trouble identifying my model. The phone apparently came unlocked and rooted, but the person who sent it must have done something wrong because when I flashed a TWRP recovery image to the phone it comes up saying: secure boot error code: 1002.
The good thing is, is that I can boot into the device and still operate it as per usual. But what I want to do is bring the recovery back to normal. I was searching around and apparently there are some KDZ files that can be used just to flash the recovery? Is this correct? If so could you assist me in what I have to do to fix my issue which is: secure boot error 1002.
I would really appreciate any help regarding the matter. :crying:
Tried posting photos, but forum would not let me, all they showed was the model numbers.
Jesse
Click to expand...
Click to collapse
On the play store there is this https://play.google.com/store/apps/details?id=com.peamoon.phoneproductioninfo
This may help you I'd the device it it is a h815t you may not have the ability to unlock the boot loader......
Also try this *#546386#815#*.
This may also help.......
https://forum.xda-developers.com/tmobile-g4/help/twrp-installation-secure-boot-error-1003-t3168385

Use LGUP-NEW to install/flash ...
Higsley said:
Dear XDA community
I recently bought a LG G4 from an online retailer. According to their website they said it was a UK model, which according to the back of the phone beneath the battery it is: LGH815. But then after booting the phone the ROM being used was: LGH815T. Then I typed in the IMEI number and found out it was a: Verizon US model??
Basically I am having trouble identifying my model. The phone apparently came unlocked and rooted, but the person who sent it must have done something wrong because when I flashed a TWRP recovery image to the phone it comes up saying: secure boot error code: 1002.
The good thing is, is that I can boot into the device and still operate it as per usual. But what I want to do is bring the recovery back to normal. I was searching around and apparently there are some KDZ files that can be used just to flash the recovery? Is this correct? If so could you assist me in what I have to do to fix my issue which is: secure boot error 1002.
I would really appreciate any help regarding the matter. :crying:
Tried posting photos, but forum would not let me, all they showed was the model numbers.
Jesse
Click to expand...
Click to collapse
Use LGUP-NEW ( https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803 ) to install/flash ... the appropriate stock KDZ for your specific model once you ascertain it (LGUP - NEW may recognize your model and you can use that info to find the right KDZ). You will have to re-root the phone if you still wish to have root.
If you do root, suggest you might want to check out steadfasterX's [LOCKED][G4][TWRP][UNOFFICIAL] TWRP-in-FIsH for all locked G4 devices at: https://forum.xda-developers.com/g4/development/locked-twrpinfish-locked-g4-devices-t3573048
It has been tested on locked devices AND unlocked devices. Version 3 Beta 4 and 5 seem very stable and the links are available in the later posts on the site. It works like a charm and has been tested on a quite a number of devices now.
Addendum: I'm wondering if the online retailer may have meant it was carrier unlocked (i.e., so you could use other service provider's sim cards), not bootloader unlocked? That could account for the secure boot error getting TWRP to load.
S.
NB: Don't forget to click the Thanks button when members try to answer your questions and/or solve issues you have encountered.