LG G4 stuck at LG LOGO screen cannot flash back stock img - G4 Q&A, Help & Troubleshooting

HI,I am having LG F500L,running Android 5.1,build number LMY47D,sofware version F500L09a. At first, I backup my system img to the phone memory. I typed these commands
Send_Command.exe \\.\COM3
then type id
dd if=/dev/block/mmcblk0 bs=8192 skip=65536 count=548352 of=/data/media/0/system.img.
After done, I opened my phone storage then there is a file named system.img.
Then I downloaded rooted img F500L10w online provided by a forumer. I renamed it to system2.img and copy it to phone storage. Then I open cmd typed these commands
Send_Command.exe \\.\COM3
then type id
dd if=/data/media/0/system.img bs=8192 seek=65536 count=548352 of=/dev/block/mmcblk0
After done, my phone reboot and stuck at LG Logo screen.
OK,then i want to flash back my stock system.img. I type these commands again.
Send_Command.exe \\.\COM3
then type id
usually it will show uid=0(root) gid=0(root) context=u:r:recovery:s0 , but there straight show # after 1 seconds.
Then i type dd if=/data/media/0/system.img bs=8192 seek=65536 count=548352 of=/dev/block/mmcblk0
after 1 second it show #
Now my phone stuck at LG Logo screen. I cannot flash back to stock img. Can i know how to solve this?Thanks.

Search the general thread.. your answer is somewhere there, someone made a thread on how to go back...also if it comes back immediately then do it again and again it will eventually work.

Same situation, using F500L 09a, ROOTED, and flash the 10w -> get stucked on LG logo
No way to restore the backup system.img, so, is it bricked? Any solution? Thanks.

ardatdat said:
Same situation, using F500L 09a, ROOTED, and flash the 10w -> get stucked on LG logo
No way to restore the backup system.img, so, is it bricked? Any solution? Thanks.
Click to expand...
Click to collapse
Yes, i try flashed H81510B kdz in download mode and managed to boot into phone but there is a problem no phone signal..

kwan788 said:
Yes, i try flashed H81510B kdz in download mode and managed to boot into phone but there is a problem no phone signal..
Click to expand...
Click to collapse
got some progress?
on another topic, we have more users with the same problem, including me.
After the flash 815 firmaware, you get back the original system.img?
tks

redhatux said:
got some progress?
on another topic, we have more users with the same problem, including me.
After the flash 815 firmaware, you get back the original system.img?
tks
Click to expand...
Click to collapse
After flashing 815 firmware,i boot into phone connect to pc and copy my original system.img to phone storage that i backup before flash. And i flash it again. It still same stuck at LG Logo. So, I flashed back 815 firmware. You can try find stock system.img from other people and call them share with you. Then put it in phone storage to flash. Hope that can help u.

kwan788 said:
Yes, i try flashed H81510B kdz in download mode and managed to boot into phone but there is a problem no phone signal..
Click to expand...
Click to collapse
kwan788 said:
After flashing 815 firmware,i boot into phone connect to pc and copy my original system.img to phone storage that i backup before flash. And i flash it again. It still same stuck at LG Logo. So, I flashed back 815 firmware. You can try find stock system.img from other people and call them share with you. Then put it in phone storage to flash. Hope that can help u.
Click to expand...
Click to collapse
I created the backup system.img for granted before this, so I have.
But you said it still did not work. that's it?
After the flash 815, you could use adb and the "send command" to flash your system.img?
tks

redhatux said:
I created the backup system.img for granted before this, so I have.
But you said it still did not work. that's it?
After the flash 815, you could use adb and the "send command" to flash your system.img?
tks
Click to expand...
Click to collapse
I tried use adb and the "send command" to flash my backup system.img. My phone still stuck at LG Logo. Because the system partition already changed to H815 and does not same with F500L so it cannot works. Now i rooted my phone and still finding solution to flash back the modem file to get phone signal.

kwan788 said:
I tried use adb and the "send command" to flash my backup system.img. My phone still stuck at LG Logo. Because the system partition already changed to H815 and does not same with F500L so it cannot works. Now i rooted my phone and still finding solution to flash back the modem file to get phone signal.
Click to expand...
Click to collapse
Hi there i have the same issue as you no phone function flashed the 815 firmware with an lf f500l model. Have you found a solution to get the signal back for phone
cheers
mark

http://forum.xda-developers.com/showthread.php?t=3172724
Im in the same exact situation.
It looks like we can use h815 10b kdz but loose signal strength. But it boots.
We need to figure out how to backup f500l original partitions, as much as we can before so we can restore it all afterwards.
Need to figure out how to calculate bs, skip, count ect.. Of each partition. Not sure exact what we absolutely need. Assuming system, boot, modems at minimum.
---------- Post added at 09:33 AM ---------- Previous post was at 09:26 AM ----------
kwan788 said:
HI,I am having LG F500L,running Android 5.1,build number LMY47D,sofware version F500L09a. At first, I backup my system img to the phone memory. I typed these commands
Send_Command.exe \\.\COM3
then type id
dd if=/dev/block/mmcblk0 bs=8192 skip=65536 count=548352 of=/data/media/0/system.img.
After done, I opened my phone storage then there is a file named system.img.
Then I downloaded rooted img F500L10w online provided by a forumer. I renamed it to system2.img and copy it to phone storage. Then I open cmd typed these commands
Send_Command.exe \\.\COM3
then type id
dd if=/data/media/0/system.img bs=8192 seek=65536 count=548352 of=/dev/block/mmcblk0
After done, my phone reboot and stuck at LG Logo screen.
OK,then i want to flash back my stock system.img. I type these commands again.
Send_Command.exe \\.\COM3
then type id
usually it will show uid=0(root) gid=0(root) context=u:r:recovery:s0 , but there straight show # after 1 seconds.
Then i type dd if=/data/media/0/system.img bs=8192 seek=65536 count=548352 of=/dev/block/mmcblk0
after 1 second it show #
Now my phone stuck at LG Logo screen. I cannot flash back to stock img. Can i know how to solve this?Thanks.
Click to expand...
Click to collapse
What I dont understand is why your phone doesnt work. Because according to what you posted here is what you really did. You flashed your own backup system.img and not the rooted system2.img. So your phone should have stayed as it was.
Unless youve mistyped..
---------- Post added at 09:34 AM ---------- Previous post was at 09:33 AM ----------
skyelm said:
Search the general thread.. your answer is somewhere there, someone made a thread on how to go back...also if it comes back immediately then do it again and again it will eventually work.
Click to expand...
Click to collapse
F500L does not have kdz or tot to go back to stock. So that doesn't work for us.

OR we need someone with a working F500L to back up his or her system, boot and modem partitions and share with us

clockcycle said:
OR we need someone with a working F500L to back up his or her system, boot and modem partitions and share with us
Click to expand...
Click to collapse
I have the modem file..if u want, i can send u..

kwan788 said:
I have the modem file..if u want, i can send u..
Click to expand...
Click to collapse
Thats awesome. For 9a or 10a? Did you get boot.img as well?
If you could link it in the thread it would be great and might help others that need it as well.
Have you been able to get yours to work again?
Should be 3 modem partitions, how did you get them? Id like to back mine up too.

clockcycle said:
Thats awesome. For 9a or 10a? Did you get boot.img as well?
If you could link it in the thread it would be great and might help others that need it as well.
Have you been able to get yours to work again?
Should be 3 modem partitions, how did you get them? Id like to back mine up too.
Click to expand...
Click to collapse
F500L modem is all same..i get the files from my friends..last time i try flashed but failed and stucked at logo..maybe the modem partition size is different..need to flash full partition..
https://drive.google.com/folderview?id=0B3Ja39DEW20TflZIV19Xcm05YTFzcm9FR0huWVc2dzVIamg3UWUxazVuY05QSFdDaUVlQTQ&usp=sharing

kwan788 said:
F500L modem is all same..i get the files from my friends..last time i try flashed but failed and stucked at logo..maybe the modem partition size is different..need to flash full partition..
https://drive.google.com/folderview...c2dzVIamg3UWUxazVuY05QSFdDaUVlQTQ&usp=sharing
Click to expand...
Click to collapse
I think we need to restore boot.img also.

clockcycle said:
I think we need to restore boot.img also.
Click to expand...
Click to collapse
I created the topic with the procedures to restore the baseband f500L.
Tested 100%.
http://forum.xda-developers.com/g4/general/lg-g4-f500l-restore-signal-flash-815-t3214574

Related

[Q] Stuck in Fastboot Mode. Need Help D851 10m laf.img required

I restored my backup and it was successful after a full wipe and now it took me to fastboot mode.I have no idea how to get out of fastboot mode and use fastboot commands please help!
xmagiicsx said:
I restored my backup and it was successful after a full wipe and now it took me to fastboot mode.I have no idea how to get out of fastboot mode and use fastboot commands please help!
Click to expand...
Click to collapse
When you or someone else gets the laf.img for you for the d85110m follow these instructions..
http://forum.xda-developers.com/showthread.php?t=2477595
DO NOT USE THE LAF.IMG IN THE LINK. THE ONE PROVIDED IN LINK IS FOR THE KOREAN G2.. AGAIN YOULL NEED THE ONE FOR YOUR PHONE FIRST
Swizzle82 said:
When you or someone else gets the laf.img for you for the d85110m follow these instructions..
http://forum.xda-developers.com/showthread.php?t=2477595
DO NOT USE THE LAF.IMG IN THE LINK. THE ONE PROVIDED IN LINK IS FOR THE KOREAN G2.. AGAIN YOULL NEED THE ONE FOR YOUR PHONE FIRST
Click to expand...
Click to collapse
Got it and fixed my phone thanks!
Flash laf.img ,boot,recovery and my phone booted up
xmagiicsx said:
Got it and fixed my phone thanks!
Flash laf.img ,boot,recovery and my phone booted up
Click to expand...
Click to collapse
Maybe you can share the laf.img so others who get stuck could access it..
Swizzle82 said:
Maybe you can share the laf.img so others who get stuck could access it..
Click to expand...
Click to collapse
Good Idea! Soon as I get home I'll post it in G3 general. I just got out lol

[Q] US990 converted to LS990 calls work but no data

As the title says, I converted a US990 to a LS990 and then flashed Cloudy G3 1.2 for the LS990.
Calls work on both AT&T and T-Mobile but I can not get data to connect for either network.
I have put in the correct APN settings and changed the network around from GSM only to LTE only as well as all the others but nothing will let me get data.
I have tried different basebands/modems from the US990 and LS990.
I also flashed modems from all the other G3 variations but still no data.
Only the ZV4 & ZV6 modems from the LS990 allow calls to work.
I do not want to put the instructions for how to do the conversion unless I can get data working.
Anyone have any ideas?
Can you post your steps of how you converted a US990 to LS990
Noones gonne be able to help you if we dont know what you did...
I did not want to post these instructions because I knew people would start making bricks. I am done with this.
So I am thinking that this conversion can be made simple by flashing cloudy g3 for the LS990 to the US990 and then flashing the ZV4 or ZV6 modem from the LS990.
Could you please let me know if that works? I am trying to figure out if this US990 is worth keeping or just selling at a loss on eBay.
please upload nandroid
Abu Siona said:
This is true. I just did not want a bunch of people trying to convert the phone and then be stuck not being able to fully use it.
I will keep it simple for now then and there may be an easier way to do this.
I rooted the phone and installed TWRP.
I had a nandroid back up for an LS990 that I restored to the US990.
I used a restore because whenever I tried to install a rom that was meant for an LS990 it would fail and corrupt the system partition. This would lead to needing to either restore the US990 from a Twrp back up or using a KDZ to get the phone working again.
The reason that I even tried this is because the US990 system board is labeled as an LS990. Makes me think that the hardware is identical.
After the nandroid restore the phone lost its ability to boot to the system and started in fastboot mode. it still had download mode too so I used an LS990 ZV4 tot and flashed the tot using LG Flash too. It booted straight up after the tot flash and was now an LS990.
I proceeded to root and install cloudy G3 1.2 for the LS990 from a nandroid.
I had to use a nandroid to install because the phone has a bad touch screen and I can not run the aroma installer from TWRP to finish installing the cloudy rom.
Dark unicorn was also installed from a nandroid back up because it will fail to install on the US990 even after the conversion causing the system partition to become corrupted.
At this point calls worked. I did not try to send or receive a text yet.
Calls also worked with the dark unicorn lollipop rom for GSM on the LS990 but again no working data.
Using T-Mobile my network connection is UMTS at best but no data working
Using AT&T I get HSPA but no data working.
I tried different modems but nothing helped. Only the LS990 modems were able to get calls using sim cards from AT&T and T-mobile.
It looses a signal if I switch to 2G only and LTE only but works good on GSM only and WCDMA only as well as the variations that include multiple connections like GSM and WCDMA.
When I did the first restore using the LS990 back up I forgot to remove the EFS partition and so my ESN got changed. I had to fix it.
This is pretty much where i am right now with the phone. It is fully recognized as an LS990 by flashtool and PC.
Click to expand...
Click to collapse
please be kind enough to upload the nandroid backup somewhere . thanks
US990 Sim Unlock
essojay said:
please be kind enough to upload the nandroid backup somewhere . thanks
Click to expand...
Click to collapse
I second that.
I actually made a LS990 Nandroid backup, restored and no help. Flashing Cloudy 1.3 while selecting LS990 gave same results as restoring LS990 nandroid backup. In both cases, I had to restore the device back to stock using US990 kdz. Also, don't use US99020a firmware to restor as TWRP won't work on that, though root is possible.
I tried CM12.1 Unofficial which was released last week as well but that does not unlock the device either.
Don't know where I'm wrong, do I need to backup EFS as well?
texan_mirage said:
I second that.
I actually made a LS990 Nandroid backup, restored and no help. Flashing Cloudy 1.3 while selecting LS990 gave same results as restoring LS990 nandroid backup. In both cases, I had to restore the device back to stock using US990 kdz. Also, don't use US99020a firmware to restor as TWRP won't work on that, though root is possible.
I tried CM12.1 Unofficial which was released last week as well but that does not unlock the device either.
Don't know where I'm wrong, do I need to backup EFS as well?
Click to expand...
Click to collapse
Please can you upload the nandroid backup..jt ll be appreciated.....and if you need to flash cloudy into the phone..you ll need to delete boot.img from the zip..just click on cloudy.zip then go to variant and delete boot.img from the variant you want to flash flashing is then ok..
But please upload your nandroid and we take it from there.. thanks
essojay said:
Please can you upload the nandroid backup..jt ll be appreciated.....and if you need to flash cloudy into the phone..you ll need to delete boot.img from the zip..just click on cloudy.zip then go to variant and delete boot.img from the variant you want to flash flashing is then ok..
But please upload your nandroid and we take it from there.. thanks
Click to expand...
Click to collapse
I restored the US990 back to stock and started from scratch. I got it working again without using the nandroid this time.
From a stock US990 I rooted and installed TWRP for the US990.
I installed cloudyfa G3 1.2 for the LS990.
I deleted the LAF partition to get into fastboot mode.
I flashed the following from ZV4 LS990:
fastboot flash aboot aboot.img
fastboot flash boot boot.img
fastboot flash dbi dbi.img
fastboot flash factory factory.img
fastboot flash misc misc.img
fastboot flash modem modem.img
fastboot flash persist persist.img
fastboot flash PrimaryGPT PrimaryGPT.img
fastboot flash rct rct.img
fastboot flash rpm rpm.img
fastboot flash sbl1 sbl1.img
fastboot flash tz tz.img
Thanks to autoprime for hosting the LG partitions.
After the partitions were flashed I was back to working calls and text using my GSM sim but still no data.
If you have unknown baseband after flashing cloudy G3, then you will need to flash back to stock using an LS990 ZV4 tot and then root, install TWRP for LS990 and then install cloudy again to get the baseband to stick.
One of the most important things here is the modem. Only ZV4 and ZV6 from the LS990 will allow the GSM hack to work. And I have had the unknown baseband if I flash cloudy on any LS990 other than ZV4.
I will need to make a new nandroid. I will make one from the US990 that I already have working on GSM and post a link when done but you will still need to flash at least the modem from LS990 ZV4 to get it to work.
essojay said:
Please can you upload the nandroid backup..jt ll be appreciated.....and if you need to flash cloudy into the phone..you ll need to delete boot.img from the zip..just click on cloudy.zip then go to variant and delete boot.img from the variant you want to flash flashing is then ok..
But please upload your nandroid and we take it from there.. thanks
Click to expand...
Click to collapse
Sorry, I am on a fairly slow connection and it's still uploading. I guess there is another response to this thread and nandroid backup might not be needed anymore. Let me know if you still wnated me to upload and I'll try again.
Thanks!
Here are both the nandroid and LS990 ZV4 partitions.
The nandroid is LS990 cloudy G3 1.2 backed up from the US990 with working GSM.
It includes only the system and boot.
Nandroid: https://mega.co.nz/#!3A83nRoJ!R2dV_LSlbp13ZOjhTPCoyeD8lre_psbiA6_2JRF7fV0
LS990 partitions: https://mega.co.nz/#!LVEgnAAB!sOfUHLw-CGOeHxFbYMuyhA0NEJR3xC4UsXli1nxx3Lg
There is a flash.bat in the partitions folder. it only flashes the partitions that I mentioned. It does not flash recovery.
Abu Siona said:
Here are both the nandroid and LS990 ZV4 partitions.
The nandroid is LS990 cloudy G3 1.2 backed up from the US990 with working GSM.
It includes only the system and boot.
Nandroid: https://mega.co.nz/#!3A83nRoJ!R2dV_LSlbp13ZOjhTPCoyeD8lre_psbiA6_2JRF7fV0
LS990 partitions: https://mega.co.nz/#!LVEgnAAB!sOfUHLw-CGOeHxFbYMuyhA0NEJR3xC4UsXli1nxx3Lg
Click to expand...
Click to collapse
Thanks a ton for this! I am kinda lost on deleting LAF and getting in to fastboot as after I flashed Cloudy 1.3 with boot.img removed, all I can get in to with holding Volume up is download mode and not fast boot.
Also, are the partitions supposed to be flashed using fastboot? Please provide instructions.
TIA!
texan_mirage said:
Thanks a ton for this! I am kinda lost on deleting LAF and getting in to fastboot as after I flashed Cloudy 1.3 with boot.img removed, all I can get in to with holding Volume up is download mode and not fast boot.
Also, are the partitions supposed to be flashed using fastboot? Please provide instructions.
TIA!
Click to expand...
Click to collapse
yes the partitions need to be flash in fastboot.
How to for fastboot on the G3. http://forum.xda-developers.com/tmobile-lg-g3/general/how-to-boot-lg-g3-fastboot-mode-t3087445
After deleting the laf partition, you get into fastboot in the same way as getting into download mode.
Use the root method that works for your phone.
Abu Siona said:
yes the partitions need to be flash in fastboot.
How to for fastboot on the G3. http://forum.xda-developers.com/tmobile-lg-g3/general/how-to-boot-lg-g3-fastboot-mode-t3087445
After deleting the laf partition, you get into fastboot in the same way as getting into download mode.
Use the root method that works for your phone.
Click to expand...
Click to collapse
Thanks for the fast reply. I'm stuck with writing PrimaryGPT and rct. It keeps saying failed partition table doesn't exists and file size too large, respectively for those two files.
I'm gonna restore it back to US99010a and start from scratch.
texan_mirage said:
Thanks for the fast reply. I'm stuck with writing PrimaryGPT and rct. It keeps saying failed partition table doesn't exists and file size too large, respectively for those two files.
I'm gonna restore it back to US99010a and start from scratch.
Click to expand...
Click to collapse
Did you try to boot it to see if GSM was working even though those two are failing?
texan_mirage said:
Thanks for the fast reply. I'm stuck with writing PrimaryGPT and rct. It keeps saying failed partition table doesn't exists and file size too large, respectively for those two files.
I'm gonna restore it back to US99010a and start from scratch.
Click to expand...
Click to collapse
Also, the phone now boots into MiniOS-ATT-Test Tool and appears to be a D851 now. I am super confused as I have been noticing that on the back of the phone it has D851 written on it too along with US990. Do you think I should try flashing D851 partitions instead of LS990?
texan_mirage said:
Also, the phone now boots into MiniOS-ATT-Test Tool. Apparently that's nice when no partition tables exists. Haha. Thanks for all your help so far.
Click to expand...
Click to collapse
Yeah the mini os. Forgot about that one. After it boots to mini push and hold the power button. then after the first test passes scroll down a bit and select normal boot while still holding the power button.
As far as flashing back to US990 goes, you would need to flash a US990 nandroid and maybe some of the partitions to get flashtool to see the phone as a US990. Right now you may be able to flash the LS990ZV4 KDZ and then proceed to install cloudy.
texan_mirage said:
Also, the phone now boots into MiniOS-ATT-Test Tool and appears to be a D851 now. I am super confused as I have been noticing that on the back of the phone it has D851 written on it too along with US990. Do you think I should try flashing D851 partitions instead of LS990?
Click to expand...
Click to collapse
the D851 is only on some of the parts because LG uses them in different models. I flashed D851 modems to the phone and none worked. The phone lost baseband and I had to flash it back to an LS990 Modem.

LGUP - NEW!!! - INSTALL KDZ - MM or LP - FACTORY RESET/UPGRADE

NEW software!!!!!...... LGUP WILL FLASH YOUR KDZ files
Download LGUP from here http://www.filedropper.com/g4 or here https://www.dropbox.com/s/d2dw48uqh4hku8m/G4.rar?dl=0 or here http://oceanhost.eu/eps4h4pmwphu/LGUP.zip.htm thank you hyelton for this link :good:
Install LGUP_8994_DLL_Ver_0_0_3_23 first and then LGUP_Install_Ver_1_14_3
Make sure you have downloaded the required KDZ file MM or LP
Start LGUP prog on your computer "make sure your phone is plugged in"
ARE YOU HAVING TROUBLE WITH LGUP NOT SEEING YOUR MOBILE?
Try this....... take the back off your mobile so you can get at the battery. Connect your mobile via USB. Start LGUP, if it does not see your phone DO NOT DISCONECT, DO NOT RESTART OR TURN OFF LGUP. Take out the battery and then put it back in.......let the phone restart on its own. LGUP should now see it.
THANK YOU FOR THIS Killerdog:good: <~~~To Modify This File You Must Have Root!!
For me it's show in LGUP as unknow device.
reboot my phone, remove battery and anything else don't work.
I install LG Bridge to test, and nothing seem to work.
After make some test and search, i find some info modified by S3V3N into his rom (cust partition) that he have modify into this file:
/cust/OPEN_COM/cust_OPEN_EU.prop
Code:
ro.lge.swversion=[COLOR="Red"]some info[/COLOR]
ro.lge.swversion_short=[COLOR="Red"]some info[/COLOR]
change to
Code:
ro.lge.swversion=[COLOR="Red"]H81510c[/COLOR]
ro.lge.swversion_short=[COLOR="Red"]V10c[/COLOR]
restart my phone and woow it show correctly in LGUP and i can refurbish my phone.
TO UPGRADE TO MM from LP - make sure BIN file is ticked and in the File Path point it towards the MM KDZ you have downloaded. MAKE SURE YOU HAVE CLICKED UPGRADE! This will update you from LP to MM with out wiping any of your info. Press Start. Make cup of tea and be patient
TO DO A FULL WIPE AND INSTALL MM - Open the LGUP on your computer. FILE PATH point it towards the MM KDZ.
IMPORTANT!!!!!!! shut down LGUP!
Now open LGUP again - you will notice that the MM KDZ will still be showing in the FILE PATH section. Select REFURBISH and make sure BIN file is ticked. Press Start. Make cup of tea and be patient
TO GO BACK TO LP FROM MM - Open LGUP on your computer, click on FILE PATH and point it towards your LP KDZ. Close LGUP and re-open LGUP. Make sure you select REFURBISH this will do a full wipe, tick BIN file. Press Start. Make cup of tea and be patient
If you are worried about losing your data after a full wipe, why not use the LG Bridge software to backup and restore.... it works fine!
YOU WILL LOSE ROOT!
There is no need to enter download mode! LGUP will do it for you.
Original thread by schafi03 http://www.android-hilfe.de/thema/a...er-zurueck-auf-android-5.733674/#post-9342963
Thank You schafi03
INSTALL TWRP
Make sure you have ADB and Fastboot installed.
I always put TWRP.img in the ADB folder - so if I want to boot into TWRP with out installing it this is what I do:
make sure you open a command prompt in the ADB folder "VERY IMPORTANT" and type:
adb reboot bootloader <enter>
fastboot boot TWRP.img <whatever your TWRP image is called in your ADB folder><enter> dont forget the .img at the end
That will re-start your phone straight into TWRP - You can transfer files to and from your computer while in recovery.
If you want to install TWRP permanently, copy your TWRP image to your mobile "while you are in TWRP RECOVERY mode" then press install then select images then select recovery NOT BOOT then swipe to flash. This method does not install TWRP app on your phone, all you need is a reboot app from the play store that will re-boot you into recovery.
How to root LG G4 H815 on Android Marshmallow
http://www.ibtimes.co.uk/how-root-lg-g4-h815-android-marshmallow-1526102
OTHER GREAT THREADS TO HELP YOU
http://forum.xda-developers.com/g4/development/stock-h815-20a-stock-images-kdz-t3232282 by autoprime "Great Job"
http://storagecow.eu/index.php?dir=Xda/LG+G4/ an extensive list of KDZ files
Have fun people! :good:
don't know if it makes a difference, but i read somewhere to install LGUP dll first, then the other one.
reg66 said:
don't know if it makes a difference, but i read somewhere to install LGUP dll first, then the other one.
Click to expand...
Click to collapse
Not sure but I'll put that in the op cheers.
Do you need root so use this method to upgrade to marshmallow ?
H81520A_00.Kdz flashed (by upgrade option) succesfully. It takes 10-15 mins(longest part is "android upgrading" screen.), and i lost root access. By the way root access is not necessary for upgrade.
So since it wasn't clarified, I'll be the one to ask...
Will this work on a unit without root (which is yes according to the OP), and without a bootloader unlock, ie the Taiwan (TWN) variant of the H815.
I completely understand it's a complete wipe and root will not be retained.
I would also like to know about this..... will it work on a unit with a locked bootloader... TWN variant?
downloaded from a different mirror re flashed no problems
Hello downgrande wokrs?
munkypoo7 said:
So since it wasn't clarified, I'll be the one to ask...
Will this work on a unit without root (which is yes according to the OP), and without a bootloader unlock, ie the Taiwan (TWN) variant of the H815.
I completely understand it's a complete wipe and root will not be retained.
Click to expand...
Click to collapse
its working on all last night i did downgrade to 5.1 and so far all working great
no root or unlocked bootloader is needed
madshabz said:
I would also like to know about this..... will it work on a unit with a locked bootloader... TWN variant?
Click to expand...
Click to collapse
yes it will work with locked bootloader
ktomika said:
Hello downgrande wokrs?
Click to expand...
Click to collapse
great i did it and now using 7Rom 6.3 3d Rom
best of luck guys
Rikoman17 said:
Do you need root so use this method to upgrade to marshmallow ?
Click to expand...
Click to collapse
no you do not need root....this method will take you back to stock ROM
do I have to unlock bootloader?
microcens said:
do I have to unlock bootloader?
Click to expand...
Click to collapse
no you do not
Kdz only? Does it work with tot file?
bobimbap said:
Kdz only? Does it work with tot file?
Click to expand...
Click to collapse
I'm presuming yes but I havn't tried this, maybe someone could enlighten us
madshabz said:
I would also like to know about this..... will it work on a unit with a locked bootloader... TWN variant?
Click to expand...
Click to collapse
work for all . root and unroot . locked or unlocked . doesnt care . its a special software
---------- Post added at 09:05 AM ---------- Previous post was at 09:04 AM ----------
bobimbap said:
Kdz only? Does it work with tot file?
Click to expand...
Click to collapse
that work fine with TOT file too my friend tested on corean version of g4
Worked a treat no issues so far
Sent from my LG-H815 using Tapatalk
kevtrysmoddin said:
Worked a treat no issues so far
Sent from my LG-H815 using Tapatalk
Click to expand...
Click to collapse
Great... Did you upgrade to MM or factory reset MM or LP?
shakeyabooti said:
Great... Did you upgrade to MM or factory reset MM or LP?
Click to expand...
Click to collapse
Upgraded
Sent from my LG-H815 using Tapatalk
info
i tried with this tutorial , but the program search my lg g4 with unknown model and i can't use this procedure..
why?
at moment i have a unlocked bootloader and a 10 ve rooted rom twrp

Soft Bricked G8 RIO-L01

Hi, i was recently trying to flash twrp and root but i got bootloops, and i couldn´t do anything, i even flashed stock recovery as some of you said but with no success.
I´d really appreciate your help. My device is stuck on the first Huawei logo, im able to go to fastboot and twrp recovery. unfortunatelly i cant flash anything from twrp for some reason.
best regards.
AndroidNewb666 said:
Hi, i was recently trying to flash twrp and root but i got bootloops, and i couldn´t do anything, i even flashed stock recovery as some of you said but with no success.
I´d really appreciate your help. My device is stuck on the first Huawei logo, im able to go to fastboot and twrp recovery. unfortunatelly i cant flash anything from twrp for some reason.
best regards.
Click to expand...
Click to collapse
Does you already updated twrp with the last update ?
surdu_petru said:
Does you already updated twrp with the last update ?
Click to expand...
Click to collapse
Yes i do have
AndroidNewb666 said:
Yes i do have
Click to expand...
Click to collapse
Ok... if someone with 6.0 can provide system.img, boot.img and recovery.img would be nice , just flash them via fastboot .
To extract partition, you must be root :
> adb shell
$ su
# de if=/dev/block/bootdevice/by-name/system of=/data/local/tmp/system.img
# chmod 0644 data/local/tmp/system.img
# exit
$ exit
> adb pull data/local/tmp/system.img
Should be use the same way to extract boot and recovery.
Maybe someone can help you ... if not I'll try to put stock L on my device, maybe I'll recive update for L, and I'll provide you all images.
Good luck !
surdu_petru said:
Ok... if someone with 6.0 can provide system.img, boot.img and recovery.img would be nice , just flash them via fastboot .
To extract partition, you must be root :
> adb shell
$ su
# de if=/dev/block/bootdevice/by-name/system of=/data/local/tmp/system.img
# chmod 0644 data/local/tmp/system.img
# exit
$ exit
> adb pull data/local/tmp/system.img
Should be use the same way to extract boot and recovery.
Maybe someone can help you ... if not I'll try to put stock L on my device, maybe I'll recive update for L, and I'll provide you all images.
Good luck !
Click to expand...
Click to collapse
I was able to pull boot.img and recovery.img from a UPDATE.APP from the Marshmallow update, got it to boot into the second huawei logo but still with a bootloop...
Trying to do a force update to Marshmallow to see if its going to work.
Thanks for your hard work.
edit: no luck , still on bootloops.
tried to flash 5.1 over 6.0 but i fastboot says "cannot load "system.img"
edit2: GOOD NEWS! used a more recent version of fastboot and successfully flashed system.img boot.img and recovery.img from 5.1 and it booted ! YAY:victory:
surdu_petru said:
Ok... if someone with 6.0 can provide system.img, boot.img and recovery.img would be nice , just flash them via fastboot .
To extract partition, you must be root :
> adb shell
$ su
# de if=/dev/block/bootdevice/by-name/system of=/data/local/tmp/system.img
# chmod 0644 data/local/tmp/system.img
# exit
$ exit
> adb pull data/local/tmp/system.img
Should be use the same way to extract boot and recovery.
Maybe someone can help you ... if not I'll try to put stock L on my device, maybe I'll recive update for L, and I'll provide you all images.
Good luck !
Click to expand...
Click to collapse
Going to try to root with marshmallow and get you your modem files, wish me luck heeh
EDIT2: Couldnt flash any update.zip with the stock recovery, cant go into marshmallow without the images.
which version of fastboot yu have used to flash the system.img plz?! i get "cant load" error
---------- Post added at 11:29 PM ---------- Previous post was at 11:28 PM ----------
ps. i used the huawei update extractor app for windows to extract the imgs
ahmadgforcee said:
which version of fastboot yu have used to flash the system.img plz?! i get "cant load" error
---------- Post added at 11:29 PM ---------- Previous post was at 11:28 PM ----------
ps. i used the huawei update extractor app for windows to extract the imgs
Click to expand...
Click to collapse
Use this
http://forum.xda-developers.com/showthread.php?t=2317790, the process is the same.
Copy the files to the correct directory and flash them accordingly.
can somebody post the files i need to flash?
im also stuck on twrp 3.0.0
uploaded [dot] net /file/4pafyrxf
flash img file inside from fastboot as recovery
turn on the phone,it will go to stock recovery process , turn the phone off and on [regardless stock recovery says your phone will crash]
it will solve your problem[i had the same problem , read this way somewhere else i ve no idea where was it ]
Hello.
I have the same problem. After upgrade the firmware C432B140 to B170 with files update.app, I have bootloops !!!
Please, need helps ! I have a backup rom stock, tried to restore the backup, but always bootloops in TWRP 3.0 !
Time to download official firmware is eternal !
I tried to flash TWRP with the minimal ADB & fastboot, it's ok, but still bootloops ! Tried to install cyanogen unofficial : message error !
Do someone can give me the "RIO-L01C432B140_EU Channel_TA_Dual SIM.Zip" for new flashing, please ? The server download link on XDA forum is very very slow. More than 6 hours to 1.2 Go !!!!
Thank's for help !
iderf said:
Hello.
I have the same problem. After upgrade the firmware C432B140 to B170 with files update.app, I have bootloops !!!
Please, need helps ! I have a backup rom stock, tried to restore the backup, but always bootloops in TWRP 3.0 !
Time to download official firmware is eternal !
I tried to flash TWRP with the minimal ADB & fastboot, it's ok, but still bootloops ! Tried to install cyanogen unofficial : message error !
Do someone can give me the "RIO-L01C432B140_EU Channel_TA_Dual SIM.Zip" for new flashing, please ? The server download link on XDA forum is very very slow. More than 6 hours to 1.2 Go !!!!
Thank's for help !
Click to expand...
Click to collapse
Flash the twrp and the new update for it then install the Cyanogen, it should get your phone to work again.
AndroidNewb666 said:
Flash the twrp and the new update for it then install the Cyanogen, it should get your phone to work again.
Click to expand...
Click to collapse
Not work. I have the lasted version of TWRP for RIO !
Good news ! After more and more hardwork, I can unbrick the phone.
I used Huawei_Update_Extractor, the firmware RIO_C432B140 to recover the files Boot.img, System.img and Recovery.img.
Restore with an original TWRP backup ! (That not solve the problem)
Flash Boot.img, System.img, Recovery.img with "Minimal ADB and fastboot"
The phone restart with EMUI RECOVERY, No root !
:laugh: :laugh: :laugh: :good: :good: :good:
iderf said:
Not work. I have the lasted version of TWRP for RIO !
Good news ! After more and more hardwork, I can unbrick the phone.
I used Huawei_Update_Extractor, the firmware RIO_C432B140 to recover the files Boot.img, System.img and Recovery.img.
Restore with an original TWRP backup ! (That not solve the problem)
Flash Boot.img, System.img, Recovery.img with "Minimal ADB and fastboot"
The phone restart with EMUI RECOVERY, No root !
:laugh: :laugh: :laugh: :good: :good: :good:
Click to expand...
Click to collapse
Yes , that works too ehehe.
I NEED HELP!! ... please ... I NEED HELP !!
my Huawei G8 (RIO-L01) dual SIM, now boot only in TWRP mode, showing the message: NO OS Installed !!! PLEASE, is there someone who has a Backup in twrp of this Phone ??
PLEASE , I'M DESPERATE !!!
AnLoc74 said:
I NEED HELP!! ... please ... I NEED HELP !!
my Huawei G8 (RIO-L01) dual SIM, now boot only in TWRP mode, showing the message: NO OS Installed !!! PLEASE, is there someone who has a Backup in twrp of this Phone ??
PLEASE , I'M DESPERATE !!!
Click to expand...
Click to collapse
Start by saying "Hello" can open windows, while smiling can open doors !
Is it possible for you to make a backup in TWRP recovery mod ?
AnLoc74 said:
I NEED HELP!! ... please ... I NEED HELP !!
my Huawei G8 (RIO-L01) dual SIM, now boot only in TWRP mode, showing the message: NO OS Installed !!! PLEASE, is there someone who has a Backup in twrp of this Phone ??
PLEASE , I'M DESPERATE !!!
Click to expand...
Click to collapse
Dear desperate friend
use instruction gave before
btw :
download rio-l01 stock rom or update
download huawei update extractor
use it in unknown device mode
select update.app
extract these files :
recovery.img
boot.img
system.img
go to fastboot
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash system system.img
good luck
Sent from my HUAWEI RIO-L01 using XDA-Developers mobile app
my huwei g8 stuck on logo .....
please can someone help me . my huawei g8 stuck on logo and i can't flash it , i tried with sd crd then they said install failed, moreover the bootloader is locked.....? wht should i do pleaaaaaase????:crying:
ilyas1rr said:
please can someone help me . my huawei g8 stuck on logo and i can't flash it , i tried with sd crd then they said install failed, moreover the bootloader is locked.....? wht should i do pleaaaaaase????:crying:
Click to expand...
Click to collapse
U can use Dc Phoenix to unbrick it.
Sent from my LON-L29 using XDA Labs

LG G8 Sprint stuck on bootscreen

My phone is stuck on bootscreen. My bootloader is unlocked and I have root. I was trying to uninstall the preloaded Amazon apps and one ''Root Uninstaller' app rebooted my phone and ive been stuck on the bootscreen. The phone just tries rebooting over and over. I formatted data in stock recovery, but the issue still persists. Help please
Ebizza said:
My phone is stuck on bootscreen. My bootloader is unlocked and I have root. I was trying to uninstall the preloaded Amazon apps and one ''Root Uninstaller' app rebooted my phone and ive been stuck on the bootscreen. The phone just tries rebooting over and over. I formatted data in stock recovery, but the issue still persists. Help please
Click to expand...
Click to collapse
Restoring STock boot image fixed this.
Ebizza said:
Restoring STock boot image fixed this.
Click to expand...
Click to collapse
How did you restore stock? I flashed kernel but was on custom rom. Phone got stuck on bootloop. I can't enter recovery or fastboot. LGUP fails because i can't cross flash my Sprint to any other KDZ. Any suggestions on what i can try? thanks
Eljay227 said:
How did you restore stock? I flashed kernel but was on custom rom. Phone got stuck on bootloop. I can't enter recovery or fastboot. LGUP fails because i can't cross flash my Sprint to any other KDZ. Any suggestions on what i can try? thanks
Click to expand...
Click to collapse
Did you root your phone? If you did, you can use Qfil to restore your stock boot img (if you made a backup). If you didn't, you'd have to get someone to send you their boot image. I would have sent mine, but I cross flashed from Sprint to Open US. I doubt mine would work for you.
Why can't you cross flash?
Ebizza said:
Did you root your phone? If you did, you can use Qfil to restore your stock boot img (if you made a backup). If you didn't, you'd have to get someone to send you their boot image. I would have sent mine, but I cross flashed from Sprint to Open US. I doubt mine would work for you.
Why can't you cross flash?
Click to expand...
Click to collapse
Can you please guide me on how to cross flash? Because i am getting the error 0x5319, Not allow to change the device.(SPR_US->OPEN_CA). I am using LG UP CMD method. using LG UP and UPPERCUT, it crashes at 4%. Maybe i am missing something? how did you cross flash?
Eljay227 said:
Can you please guide me on how to cross flash? Because i am getting the error 0x5319, Not allow to change the device.(SPR_US->OPEN_CA). I am using LG UP CMD method. using LG UP and UPPERCUT, it crashes at 4%. Maybe i am missing something? how did you cross flash?
Click to expand...
Click to collapse
There's a post on the site. Did you follow all the steps?
Eljay227 said:
Can you please guide me on how to cross flash? Because i am getting the error 0x5319, Not allow to change the device.(SPR_US->OPEN_CA). I am using LG UP CMD method. using LG UP and UPPERCUT, it crashes at 4%. Maybe i am missing something? how did you cross flash?
Click to expand...
Click to collapse
[Tutorial] Crossflash, Bypass OPID Mismatched Error
Hi there ;) Thanks to all other guys here who have made helpful development to tame this beautiful =) To crossflash models other than LG G8 please read post 3. Before asking any question please read the troubleshooting section at the bottom of...
forum.xda-developers.com
Here.
Ebizza said:
There's a post on the site. Did you follow all the steps?
Click to expand...
Click to collapse
To cross flash? Yes i found one, but it's via TWRP. Right now all i get is logo, "your device software can not be checked for corruption.." and screen off. I can only enter Download mode. If i can at least restore recovery i can cross flash or install custom.
Eljay227 said:
To cross flash? Yes i found one, but it's via TWRP. Right now all i get is logo, "your device software can not be checked for corruption.." and screen off. I can only enter Download mode. If i can at least restore recovery i can cross flash or install custom.
Click to expand...
Click to collapse
No. You don't need TWRP. Just read that post and follow the steps
Ebizza said:
No. You don't need TWRP. Just read that post and follow the steps
Click to expand...
Click to collapse
thanks, i crossed flashed to open. but now i cant make calls. sim service blocked. maybe i have to flash a different modem file? did you come across such errors when flashing?
Eljay227 said:
thanks, i crossed flashed to open. but now i cant make calls. sim service blocked. maybe i have to flash a different modem file? did you come across such errors when flashing?
Click to expand...
Click to collapse
No I didn't. Did you clear stock modem file from QFIL?
You should clear modem and some other files stated in that post. Then you select all partitions in LGUP except one file also stated in the post. (I can't remember the name of the file)
Ebizza said:
No I didn't. Did you clear stock modem file from QFIL?
You should clear modem and some other files stated in that post. Then you select all partitions in LGUP except one file also stated in the post. (I can't remember the name of the file)
Click to expand...
Click to collapse
yea i cleared the files mentioned in that post. and also cleared modem. Any kdz i flash, the first message i get is: this phone is permanently locked. it can not be unlocked. before this i tried some guy's backup from TWRP of his lg g8 sprint. i got lots of errors popping up when it booted. i think that's where my sim whatever got messed up.
From my research, i think a file called fsg has something to do with sim working. Also my IMEI is 0. any suggestions would be highly appreciated.
Eljay227 said:
yea i cleared the files mentioned in that post. and also cleared modem. Any kdz i flash, the first message i get is: this phone is permanently locked. it can not be unlocked. before this i tried some guy's backup from TWRP of his lg g8 sprint. i got lots of errors popping up when it booted. i think that's where my sim whatever got messed up.
From my research, i think a file called fsg has something to do with sim working. Also my IMEI is 0. any suggestions would be highly appreciated.
Click to expand...
Click to collapse
Try to restore stock modem and stock fsg. Did you backup those partitions?
Ebizza said:
Try to restore stock modem and stock fsg. Did you backup those partitions?
Click to expand...
Click to collapse
No didn’t back up. If you have can you please send me? I’m out of ideas at this point. Thanks
Eljay227 said:
No didn’t back up. If you have can you please send me? I’m out of ideas at this point. Tha
Click to expand...
Click to collapse
You should have made a backup na.
Text me on Telegram +2347018132403. I'll send you my files.

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