How to turn back from h818 to h815 recovery!!? - G4 Q&A, Help & Troubleshooting

PLEASE ANY HELP!!!
I have LG G4 (F500S) version
first i had ILAPO problem after upgrading...i used a method of disabling big cores but i had to choose TOT for H818 since TOT for H815 didn't work (WORKED!!! PHONE BOOTED thou i had to remove battery and plug in usb cable to phone, after NO BATTERY icon appear returned back battery and press VOL DOWN + POWER and remove usb after LG LOGO appear then phone boot successfully )...
after solving a problem of ILAPO i had another problem of VERY WEAK network signal, so i decided to change another kdz (H815)
now my phone has changed from 815 to 818 but whenever i try to boot it i get a blackscreen thou i can hear it booting...then after searching my IMEI info i found it is F500S i am a bit confused on what to do now!!

Same problem

sizzle05 said:
PLEASE ANY HELP!!!
I have LG G4 (F500S) version
first i had ILAPO problem after upgrading...i used a method of disabling big cores but i had to choose TOT for H818 since TOT for H815 didn't work (WORKED!!! PHONE BOOTED thou i had to remove battery and plug in usb cable to phone, after NO BATTERY icon appear returned back battery and press VOL DOWN + POWER and remove usb after LG LOGO appear then phone boot successfully )...
after solving a problem of ILAPO i had another problem of VERY WEAK network signal, so i decided to change another kdz (H815)
now my phone has changed from 815 to 818 but whenever i try to boot it i get a blackscreen thou i can hear it booting...then after searching my IMEI info i found it is F500S i am a bit confused on what to do now!!
Click to expand...
Click to collapse
99sago99 said:
Same problem
Click to expand...
Click to collapse
Reflash correct kdz with lgup doesn't help?
Sent from my LG-H815 using XDA Labs

steadfasterX said:
Reflash correct kdz with lgup doesn't help?
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
It means i have to unlock a bootloader? cause i failed to do so!! how can unlock my F500S?

sizzle05 said:
It means i have to unlock a bootloader? cause i failed to do so!! how can unlock my F500S?
Click to expand...
Click to collapse
No unlock neededt just flash the original firmware
Kdz can be found here for example:
https://forum.xda-developers.com/g4/general/kdz-tot-lg-g4-variants-t3362423
Sent from my LG-H815 using XDA Labs

steadfasterX said:
No unlock neededt just flash the original firmware
Kdz can be found here for example:
https://forum.xda-developers.com/g4/general/kdz-tot-lg-g4-variants-t3362423
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
Okey Thanks...Let me Try!!

facing same issue with my F500L i tried to convert in H815 but after H815 10c kdz itz wont giving display only shows booting sound and notification light blink during boot or red during charging
i and unable to revert to install F500L .kdz file and .tot file coz phone model changed to h818
how can i revert to alive my phone again or hardware issue occurred
please help

steadfasterX said:
Reflash correct kdz with lgup doesn't help?
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
look here please help me https://forum.xda-developers.com/g4/help/lg-g4-screen-brick-t3563623/page2

SO SAD i had to ship back my G4 to China..seems none of the solutions worked for me!!

Related

LG G4 bricked?

Hello,
After installing the Marshmallow update proposed by lg bridge my lg g4 h815t (from Hong Kong I think ) don't start any-more , I have a black screen and apparently no download mode just the notification LED that flashes and sound of a tap on screen that repeats every few seconds , is my g4 bricked? Unfortunately, the phone isn't under warranty so if you have a solution please help me.
Thank you in advance.
camalger said:
Hello,
After installing the Marshmallow update proposed by lg bridge my lg g4 h815t (from Hong Kong I think ) don't start any-more , I have a black screen and apparently no download mode just the notification LED that flashes and sound of a tap on screen that repeats every few seconds , is my g4 bricked? Unfortunately, the phone isn't under warranty so if you have a solution please help me.
Thank you in advance.
Click to expand...
Click to collapse
maybe flash it with kdz will make it work..
http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
camalger said:
Hello,
After installing the Marshmallow update proposed by lg bridge my lg g4 h815t (from Hong Kong I think ) don't start any-more , I have a black screen and apparently no download mode just the notification LED that flashes and sound of a tap on screen that repeats every few seconds , is my g4 bricked? Unfortunately, the phone isn't under warranty so if you have a solution please help me.
Thank you in advance.
Click to expand...
Click to collapse
Thats odd was ur phone rooted or runing xposed?? by flashing through lg bridge is OTA so thats why the black screen... Download the rom from below and flash it via lg flash tool 2014 by going into download mode or u could use LGUP
http://forum.xda-developers.com/g4/general/lg-g4-twn-june-security-patch-update-t3407694/page8
Hello
Finally the motherboard is damaged so I must change it but I found only h818 , what's the difference between the two models and can lg g4 h818 motherboard be installed in an h815T ?

LG G4 signal issues after update

hello xda,
i bought (from ebay) an LG g4 h815t from hong kong. it come with android 5 pre-installed and everything works fine.
i decidet to update the phone to mm (via lg bridge) and now the signal is very very poor (alomost without coverage for all day)
Any idea?
thank you very much
Go back to LP since u cant flash modems via twrp since ur g4s bootloader is locked ..
Use lgup refurbish downlod the kdz the file search here on xda
jinderation said:
Go back to LP since u cant flash modems via twrp since ur g4s bootloader is locked ..
Use lgup refurbish downlod the kdz the file search here on xda
Click to expand...
Click to collapse
i'll try, thank you

G4 shows wrong version

long time lurker here.I bought a g4 second hand.it was advertised as h815 unlocked.the imei checked out online and all stickers said 815 as well.but in hardware info it showed h815T(HK variant).thankfully i knew how to flash firmwares so i downloaded a KDZ and flashed it with lg ft 2014.for some reason (i dont remember why) i flashed 2-3 times with other kdzs and ended up in the current state.the phone now shows H818(dual sim variant) in hardware info and doesnt
detect my sim card(same sim works fine in my G2).I never downloaded the h818 kdz.
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||((TLDR))||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
phone shows wrong model in settings and doesnt detect sim card.flashing stock kdz doesnt fix this
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
any help would be appreciated as i have been flashing various KDZs since the last 2 months but have had no luck yet.
ps.
i am able to root using system.img injection method if root is required
nizamelahi said:
long time lurker here.I bought a g4 second hand.it was advertised as h815 unlocked.the imei checked out online and all stickers said 815 as well.but in hardware info it showed h815T(HK variant).thankfully i knew how to flash firmwares so i downloaded a KDZ and flashed it with lg ft 2014.for some reason (i dont remember why) i flashed 2-3 times with other kdzs and ended up in the current state.the phone now shows H818(dual sim variant) in hardware info and doesnt
detect my sim card(same sim works fine in my G2).I never downloaded the h818 kdz.
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||((TLDR))||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
phone shows wrong model in settings and doesnt detect sim card.flashing stock kdz doesnt fix this
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
any help would be appreciated as i have been flashing various KDZs since the last 2 months but have had no luck yet.
ps.
i am able to root using system.img injection method if root is required
Click to expand...
Click to collapse
i think is was misinterpreted. its a h815 but a h815t indeed and unlocked mean carrier as you know theres no way to unlock bootloader.. you need to flash the h815T KDZ. i hope that you didnt mess your imei.
inject only works in LP not on MM. also youll need to find out if you can downgrade to lollipop. as this phone have antirollback wich means once you are on a version you cannot go nack or youll hard brick phone.
raptorddd said:
i think is was misinterpreted. its a h815 but a h815t indeed and unlocked mean carrier as you know theres no way to unlock bootloader.. you need to flash the h815T KDZ. i hope that you didnt mess your imei.
inject only works in LP not on MM. also youll need to find out if you can downgrade to lollipop. as this phone have antirollback wich means once you are on a version you cannot go nack or youll hard brick phone.
Click to expand...
Click to collapse
thank you for the response.im on lollipop right now since ft 2014 doesnt flash MM and lgup and ft 2.0.1.6 stop flashing after checking phone info(they stop flashing as phone shows h818 but kdz is for h815).I flashed h815T kdz multiple times(twice just today)but phone still shows h818 in lgup and in settings.the phone cant be h818 as it only has 1 sim slot.
imei is ok right now.SIM issue happened to be a ****ty sim cut job by the customer service guy.only remaining issue is the wrong version showing up in phone settings. cant flash MM due to that.
also,is there anything good about upgrading to MM???
nizamelahi said:
thank you for the response.im on lollipop right now since ft 2014 doesnt flash MM and lgup and ft 2.0.1.6 stop flashing after checking phone info(they stop flashing as phone shows h818 but kdz is for h815).I flashed h815T kdz multiple times(twice just today)but phone still shows h818 in lgup and in settings.the phone cant be h818 as it only has 1 sim slot.
imei is ok right now.SIM issue happened to be a ****ty sim cut job by the customer service guy.only remaining issue is the wrong version showing up in phone settings. cant flash MM due to that.
also,is there anything good about upgrading to MM???
Click to expand...
Click to collapse
Actually MM isnt an upgrade. Lollipop is best(maybe nougat will be worth anything). I think you should flash uk v20g kdz with lg up(or LG firware flash 2014). I suggest using LG UP also you can give TOT method a try
check this thread:
https://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
reply to me if you will need any help
Minto107 said:
Actually MM isnt an upgrade. Lollipop is best(maybe nougat will be worth anything). I think you should flash uk v20g kdz with lg up(or LG firware flash 2014). I suggest using LG UP also you can give TOT method a try
check this thread:
https://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
reply to me if you will need any help
Click to expand...
Click to collapse
cant flash tot as lgup and ft 2.0.1.6 check phone version....
no MM for me then...lets just wait for nougat
the only issue left now is no network reception
nizamelahi said:
cant flash tot as lgup and ft 2.0.1.6 check phone version....
no MM for me then...lets just wait for nougat
the only issue left now is no network reception
Click to expand...
Click to collapse
Do they check in build.prop? If so just change build.prop value and you're good to go. I think that there is also possibility to fake your software version and then flash anything you want
Wysłane z mojego LG-H815 przy użyciu Tapatalka

Help required H815T10H

Since my H815T is stuck and i am getting "antirollback version is smaller than tot" even on 815T10H open Australia
Meaning that i have to go for official kdz and my imei confirms that it is an OPTUS Australia phone.
Therefore i need a offical OPTUS Australia firmware.
http://devtester.ro/projects/lg-firmwares/country.php?country=Australia#
have official firmware but when i click download nothing just blank page leading me to
http://pkg03.lime.gdms.lge.com/dn/downloader.dev?fileKey=FW8FBVV1329FAYXCC5FD3M7/H815T10h_00.kdz
Please suggest how to make it work or where could i get official Optus firmware H815T10H.
Thanks in advance.
Are you sure you have a H815?? There shouldn't for any antirollback for the H815T
Sent from my iPhone using Tapatalk
well... another case to the list.
You must open your G4 and see in the motherboard what model it is. Probably you have a refurbish G4 (maybe LS991 model).
the_naxhoo said:
well... another case to the list.
You must open your G4 and see in the motherboard what model it is. Probably you have a refurbish G4 (maybe LS991 model).
Click to expand...
Click to collapse
Alright opened my mobile and it have EAZ66585501_H810_MAIN_1.0 written on it. What does it mean?
And thanks to you guys and your prompt reply that we still have hope for our devices.
fawadshah33 said:
Alright opened my mobile and it have EAZ66585501_H810_MAIN_1.0 written on it. What does it mean?
And thanks to you guys and your prompt reply that we still have hope for our devices.
Click to expand...
Click to collapse
That means you have an H810 and not an H815
Sent from my iPhone using Tapatalk
hyelton said:
That means you have an H810 and not an H815
Click to expand...
Click to collapse
Thanks for the tip. Now how can i flash H810 firmware. LGUP gives error "invalid tot" when H810 tot is flashed.
fawadshah33 said:
Thanks for the tip. Now how can i flash H810 firmware. LGUP gives error "invalid tot" when H810 tot is flashed.
Click to expand...
Click to collapse
Sorry I can't help with that. That's not simple if it's possible especially if your getting antirollback problems.
I'd suggest returning the phone since it's been tampered with
Sent from my iPhone using Tapatalk

Please need LG G4 H81021z-22f stock firmware or OTA update files

Hello guys.
i have freezing problems with my LG G4 H81021y so i am trying to update it, so it may solve the problem.
So if any one have an update files or stock firmware for AT&T LG G4 please give a link
OR if you have a solution for this freezing problem i would appreciate any sort help
Really no one has update files for LG G4 H810 :crying:
bimad99 said:
Hello guys.
i have freezing problems with my LG G4 H81021y so i am trying to update it, so it may solve the problem.
So if any one have an update files or stock firmware for AT&T LG G4 please give a link
OR if you have a solution for this freezing problem i would appreciate any sort help
Click to expand...
Click to collapse
You could try a factory restore if you haven't already. Also, the LG Bridge app for your pc (download from LG site), may provide an update or an option to reinstall your firmware.
The alternative is to check (private message) with other H810 XDA owners in relevant threads to see if someone has a copy of a suitable stock firmware.
Note: If you want to install a custom rom to update to the latest security patches, etc., , you can unlock your bootloader unofficially with steadfasterX's brilliant work (many H810 users have gone this route now) - check it out here: [UNLOCK][UNOFFICIAL][G4] Unlock **ANY** LG G4 device with UsU. Read the OP thoroughly and make sure you understand it fully. You will have to have an ARB version of two or less in order to go this route, so before upgrading to any other H810 firmware, check your ARB version with SALT.
sdembiske said:
You could try a factory restore if you haven't already. Also, the LG Bridge app for your pc (download from LG site), may provide an update or an option to reinstall your firmware.
The alternative is to check (private message) with other H810 XDA owners in relevant threads to see if someone has a copy of a suitable stock firmware.
Note: If you want to install a custom rom to update to the latest security patches, etc., , you can unlock your bootloader unofficially with steadfasterX's brilliant work (many H810 users have gone this route now) - check it out here: [UNLOCK][UNOFFICIAL][G4] Unlock **ANY** LG G4 device with UsU. Read the OP thoroughly and make sure you understand it fully. You will have to have an ARB version of two or less in order to go this route, so before upgrading to any other H810 firmware, check your ARB version with SALT.
Click to expand...
Click to collapse
thanks for reply.
I already tried the factory reset, but no lights on.
Tha LG Bridge won't work as i know cuz i don't have active AT&T Sim card and i don't live in tha usa.
Asking other H810 XDA Owners for a suitable stock firmware, i really didn't think about it so i will give it a try.
My H810 already have H81021y software which has ARB 3. so no root for me, i guess :crying:
bimad99 said:
thanks for reply.
I already tried the factory reset, but no lights on.
Tha LG Bridge won't work as i know cuz i don't have active AT&T Sim card and i don't live in tha usa.
Asking other H810 XDA Owners for a suitable stock firmware, i really didn't think about it so i will give it a try.
My H810 already have H81021y software which has ARB 3. so no root for me, i guess :crying:
Click to expand...
Click to collapse
Yes, no root, no bootloader unlock for you, unfortunately.
However, ALL MAY NOT BE LOST ... check out this thread that I found: link... to Android 6.0 MM h81021y archive tot
There are a couple of links to the firmware you seem to be looking for. It is a TOT file but you should be able to flash it following the TOT method as outlined in this thread: [Guide] LG G4 Stock Firmware (Go Back to Stock) KDZ & TOT Method - scroll down to the TOT method.
Good luck.
bimad99 said:
Hello guys.
i have freezing problems with my LG G4 H81021y so i am trying to update it, so it may solve the problem.
So if any one have an update files or stock firmware for AT&T LG G4 please give a link
OR if you have a solution for this freezing problem i would appreciate any sort help
Click to expand...
Click to collapse
Could also be the ilapo if a factory reset does not solve it.
Sent from my OnePlus 6T using XDA Labs
steadfasterX said:
Could also be the ilapo if a factory reset does not solve it.
Sent from my OnePlus 6T using XDA Labs
Click to expand...
Click to collapse
The ilapo !! what do you mean ??
Does anyone knows what this ilapo thing is ?
bimad99 said:
The ilapo !! what do you mean ??
Click to expand...
Click to collapse
uhm what about using the search box ???
Also find the bootloop fix list in my signature .
Still its just a guess . Check the first 3 digits of your serial (sticker behind the battery). If it starts with 603 or lower you board will be sooner or later affected by the ilapo .
Sent from my OnePlus 6T using XDA Labs

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