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Hi guys,
I just f*** my phone!
I had updated my phone G5 RS988 unlocked edition in the version Rs98821b !
I wanted to downgrade it to the version RS98811c .
I installed lg drives , LGUP_Store_Frame_Ver_1_14_3.msi and uppercut !
I started uppercut loaded the kdz file and the phone was stuck at 5% on the screen or at 11% in the LGUP .
It gets out 10% error ERROR CODE: 0x2BC, Invalid command response code = 0x80000121.
I tried to reboot the device but it is stuck at the Firmware Update(Download Mode) .
Any suggestion ?
Maybe I need any other version of KDZ???
ok guys after some read I fixed the problem by installing the firmware "RS98810h_01_0303.kdz"
So now is possible to downgrade throught twrp or not?
searius said:
ok guys after some read I fixed the problem by installing the firmware "RS98810h_01_0303.kdz"
So now is possible to downgrade throught twrp or not?
Click to expand...
Click to collapse
You are now stuck on Brightpoint firmware that is not for the unlocked version. Your best bet is to follow the instruction on this thread.:
https://forum.xda-developers.com/lg-g5/development/stock-rs988-11c-rom-flashable-zips-imgs-t3612358
11D has the bootloader mode you can get that from here:
https://forum.xda-developers.com/lg-g5/development/stock-rs988-11d-rom-flashable-zips-imgs-t3623199
Don't forget to thank autoprime.
searius said:
ok guys after some read I fixed the problem by installing the firmware "RS98810h_01_0303.kdz"
So now is possible to downgrade throught twrp or not?
Click to expand...
Click to collapse
Hi! Thanks for the post!
I ran into exactly same problem. Any luck downgrading to RS98811c or getting rid of Brightpoint? I wasn't able to flash anything except for RS98810h_01_0303
searius said:
Hi guys,
I just f*** my phone!
I had updated my phone G5 RS988 unlocked edition in the version Rs98821b !
I wanted to downgrade it to the version RS98811c .
I installed lg drives , LGUP_Store_Frame_Ver_1_14_3.msi and uppercut !
I started uppercut loaded the kdz file and the phone was stuck at 5% on the screen or at 11% in the LGUP .
It gets out 10% error ERROR CODE: 0x2BC, Invalid command response code = 0x80000121.
I tried to reboot the device but it is stuck at the Firmware Update(Download Mode) .
Any suggestion ?
Maybe I need any other version of KDZ???
Click to expand...
Click to collapse
Did you ever get your phone fixed? I have the exact same problem. stuck on firmware update and lg up always stuck at 10 percent then error out. thanks
You might want to try flashing the ZIP/IMG
https://forum.xda-developers.com/lg-g5/development/stock-21c-roms-flashable-zips-imgs-t3679907
From TWRP
johnzenobia said:
Did you ever get your phone fixed? I have the exact same problem. stuck on firmware update and lg up always stuck at 10 percent then error out. thanks
Click to expand...
Click to collapse
Yes bro I fixed it.
But I dont remember very much.
What I did was to install again the same firmware that was the phone not to try to downgrade and after it I install the downgrade version through TWRP.
But I am not sure for this because has passed more then 8 months.
wolfu11 said:
You are now stuck on Brightpoint firmware that is not for the unlocked version. Your best bet is to follow the instruction on this thread.:
https://forum.xda-developers.com/lg-g5/development/stock-rs988-11c-rom-flashable-zips-imgs-t3612358
11D has the bootloader mode you can get that from here:
https://forum.xda-developers.com/lg-g5/development/stock-rs988-11d-rom-flashable-zips-imgs-t3623199
Don't forget to thank autoprime.
Click to expand...
Click to collapse
Hi Brother,
I have and LG G5 RS988 (Full Stock + No Root), so it was in RS988 21D Andorid 7.0 Firmware
I wanted to downgrade it, so I downloaded RS988 11C Android 6.0 KDZ file and tried to flash it through LG UP but it stucked at 10% and gave an error, and device was soft bricked So, I had to download the RS988 10H Brightpoint firmware which luckily got me out of bricked state and firmware is running fine, But i did some research and got to know that I cannot unlock my bootloader in this Brightpoint firmware..
So now i want to unlock my bootloader, what should I do now or is there any way to somehow go to RS988 11C ????
perniteo said:
Hi! Thanks for the post!
I ran into exactly same problem. Any luck downgrading to RS98811c or getting rid of Brightpoint? I wasn't able to flash anything except for RS98810h_01_0303
Click to expand...
Click to collapse
Hi Bro!
Were U able to get rid of Brightpoint or able to downgrade to RS98811c??
HyperXG said:
Hi Brother,
I have and LG G5 RS988 (Full Stock + No Root), so it was in RS988 21D Andorid 7.0 Firmware
I wanted to downgrade it, so I downloaded RS988 11C Android 6.0 KDZ file and tried to flash it through LG UP but it stucked at 10% and gave an error, and device was soft bricked So, I had to download the RS988 10H Brightpoint firmware which luckily got me out of bricked state and firmware is running fine, But i did some research and got to know that I cannot unlock my bootloader in this Brightpoint firmware..
So now i want to unlock my bootloader, what should I do now or is there any way to somehow go to RS988 11C ????
Click to expand...
Click to collapse
Wow sorry it's been years. I think your best bet is to follow that link that you "d me on and go to 11D cause that has the boot loader mode but it's been so long Not sure they're still available sorry.
wolfu11 said:
Wow sorry it's been years. I think your best bet is to follow that link that you "d me on and go to 11D cause that has the boot loader mode but it's been so long Not sure they're still available sorry.
Click to expand...
Click to collapse
Thanks for answering bro, I've solved my issue.........
hi v10 folks,
just bought this v10 mobile 3 days before. it came with 5.1 android version, so thought of upgrading it and found some weird observations.
1. on connecting mobile to LG Bridge, model shows as H901 but update shows as F600S30D :crying:
2. downloaded lg phone info app and saw the provider name as SK Telecom
i have attached three screenshots of my mobile phone. is this a genuine t mobile version ? what needs to be done to upgrade my phone to Nougat ??? instead of bricking my phone thought of taking your suggestion guys
thanx in advance
Do NOT use LG Bridge, or you will brick your phone. Dunno where you got your phone, but it has an F600 IMEI, so LG Bridge thinks you need F600 firmware.
There is a v20L KDZ floating around here somewhere. Grab it, and put your phone in download mode (pull the battery / put the battery back in / hold volume up / plug USB cable in -- you don't have to hit the power button). Once you are in download mode, you can flash the KDZ with LG UP. That will get you to MM 6.0.1 which is still rootable using the dirtycow method (if you care about rooting). If you don't care about rooting, I am uploading the v30b Nougat KDZ right now. It is not rootable with any currently known methods. If you do want root, root on v20L, and then I will also be posting an update.zip that will take you to v30b and keep root.
-- Brian
runningnak3d said:
Do NOT use LG Bridge, or you will brick your phone. Dunno where you got your phone, but it has an F600 IMEI, so LG Bridge thinks you need F600 firmware.
There is a v20L KDZ floating around here somewhere. Grab it, and put your phone in download mode (pull the battery / put the battery back in / hold volume up / plug USB cable in -- you don't have to hit the power button). Once you are in download mode, you can flash the KDZ with LG UP. That will get you to MM 6.0.1 which is still rootable using the dirtycow method (if you care about rooting). If you don't care about rooting, I am uploading the v30b Nougat KDZ right now. It is not rootable with any currently known methods. If you do want root, root on v20L, and then I will also be posting an update.zip that will take you to v30b and keep root.
-- Brian
Click to expand...
Click to collapse
My goodness, thanks for the prompt reply buddy, you saved my @SS im seriously not worried for root or bootloader unlock. im ok with stock nougat without root. so which kdz i need to flash ? im confused
As far as I know, no one has uploaded the Nougat KDZ yet, so I am in the process of uploading it. Google drive is being REAL slow. Since you don't care about root, you can use the same method that I described above (get into download mode, and use LG UP to flash the KDZ). I will make a post just a soon as it finishes uploading.
You might want to take this time to be SURE that you don't want root, because once you flash Nougat, there will more than likely never be a way to root this phone unless another exploit in the Linux kernel can be found...
-- Brian
runningnak3d said:
As far as I know, no one has uploaded the Nougat KDZ yet, so I am in the process of uploading it. Google drive is being REAL slow. Since you don't care about root, you can use the same method that I described above (get into download mode, and use LG UP to flash the KDZ). I will make a post just a soon as it finishes uploading.
You might want to take this time to be SURE that you don't want root, because once you flash Nougat, there will more than likely never be a way to root this phone unless another exploit in the Linux kernel can be found...
-- Brian
Click to expand...
Click to collapse
mine is running nougat. but after a warm war with the qualcomm 9008 mode
@SandyKick I uploaded the KDZ in this thread.
-- Brian
runningnak3d said:
@SandyKick I uploaded the KDZ in this thread.
-- Brian
Click to expand...
Click to collapse
hi bro, @runningnak3d
device shows like this when i connected to my linux machine LGF600S16564708 (adb devices). so can i flash this H90130B KDZ ?
SandyKick said:
hi bro, @runningnak3d
device shows like this when i connected to my linux machine LGF600S16564708 (adb devices). so can i flash this H90130B KDZ ?
Click to expand...
Click to collapse
No if you update h90130b your phone will be a hardbrick.
You have to upgrade F600S30d But you might lose the network !!!
@SandyKick If you can return that phone for an exchange, you might want to. As @dodo73 said, (in not so many words) you are boned. You are going to have to take a risk either way, but the safest route since adb sees the device as an F600, is to flash the F600 firmware. If you lose network, you can then try flashing the H901 modem. Let us know how it goes, but you are probably going to have to do SOME kind of fixup -- it will not be a clean flash / upgrade / happy phone
EDIT: If you flash the F600 firmware and brick your phone, that is also easy to fix -- and you will know that you DO need the H901 firmware.
runningnak3d said:
Do NOT use LG Bridge, or you will brick your phone. Dunno where you got your phone, but it has an F600 IMEI, so LG Bridge thinks you need F600 firmware.
There is a v20L KDZ floating around here somewhere. Grab it, and put your phone in download mode (pull the battery / put the battery back in / hold volume up / plug USB cable in -- you don't have to hit the power button). Once you are in download mode, you can flash the KDZ with LG UP. That will get you to MM 6.0.1 which is still rootable using the dirtycow method (if you care about rooting). If you don't care about rooting, I am uploading the v30b Nougat KDZ right now. It is not rootable with any currently known methods. If you do want root, root on v20L, and then I will also be posting an update.zip that will take you to v30b and keep root.
-- Brian
Click to expand...
Click to collapse
i have same model and problem with my phone is that it is not recognised my lg up,,, lgup keep on saying unknown modell please help me if you have any fix for it
@hapyfaroq What does adb say? If you plug your phone in, and type adb devices, what is the output?
-- Brian
hapyfaroq said:
i have same model and problem with my phone is that it is not recognised my lg up,,, lgup keep on saying unknown modell please help me if you have any fix for it
Click to expand...
Click to collapse
now im facing the same problem.... everything is in korean in download mode mobile not recognizing in LG UP :crying::crying:
read this thread by @shadi47pk - https://forum.xda-developers.com/lg-v10/general/lg-v10-f600s-conversion-to-t3549884
i think octoplus box is required to get working
@SandyKick as long as you have download mode, you can fix your phone without needing a jtag box. What KDZ did you flash / how did you flash it to get in the condition you are in?
-- Brian
SandyKick said:
now im facing the same problem.... everything is in korean in download mode mobile not recognizing in LG UP :crying::crying:
read this thread by @shadi47pk - https://.xda-.com/lg-v10/general/lg-v10-f600s-conversion-to-t3549884
i think octoplus box is required to get working
Click to expand...
Click to collapse
IT took 2 hrs to figure out what was the real problem... real problem, with lg up is the common folder ( which is related to the model of the phone) so follow this link for lgup configuration.
https://www.androidsage.com/2016/04/12/update-t-mobile-lg-v10-android-6-0-marshmallow-h90120e-lgup/
and what i need from you is: Which link did you use to upgrade to MM (v20L link?) Thanks in advance.
runningnak3d said:
@SandyKick as long as you have download mode, you can fix your phone without needing a jtag box. What KDZ did you flash / how did you flash it to get in the condition you are in?
-- Brian
Click to expand...
Click to collapse
nope, i didnt flashed anything. installed LGUP exactly mentioned in this post - https://forum.xda-developers.com/lg-v10/general/guide-lg-v10-stock-firmware-to-stock-t3224170
unknown model is being shown in LG UP.
hapyfaroq said:
IT took 2 hrs to figure out what was the real problem... real problem, with lg up is the common folder ( which is related to the model of the phone) so follow this link for lgup configuration.
https://www.androidsage.com/2016/04/12/update-t-mobile-lg-v10-android-6-0-marshmallow-h90120e-lgup/
and what i need from you is: Which link did you use to upgrade to MM (v20L link?) Thanks in advance.
Click to expand...
Click to collapse
THANKS FOR THE TIP BRO, just bought the phone 3 days back. its still with 5.1 android version. current firmware h90110o. once lgup detects my phone will try flashing F600S30D kdz.
V20L link required
runningnak3d said:
@SandyKick as long as you have download mode, you can fix your phone without needing a jtag box. What KDZ did you flash / how did you flash it to get in the condition you are in?
-- Brian
Click to expand...
Click to collapse
Please provide correct link for the kdz as i have tried to flash F600S20l_00_0503.kdz but lgup says wrong kdz.
hapyfaroq said:
Please provide correct link for the kdz as i have tried to flash F600S20l_00_0503.kdz but lgup says wrong kdz.
Click to expand...
Click to collapse
try here: i downloded the nougat version.
https://lg-firmwares.com/lg-f600s-firmwares/
SandyKick said:
try here: i downloded the nougat version.
https://lg-firmwares.com/lg-f600s-firmwares/
Click to expand...
Click to collapse
I dont think going straight from 5.1.1 to nougat is a good idea. And after 1 hr of download if lg up is going to say incorrect kdz then why time waste
@SandyKick first we have to upgrade it to 6.0 to see everything goes welll then decide to upgrade it to 7.0
I have been searching for v20L kdz link but which model it is the huge problem
as we can not flash H901 kdz.
f600L?
F600s?
F600K?
There are three model with several updates. :/ Pretty confusing right.
hapyfaroq said:
I dont think going straight from 5.1.1 to nougat is a good idea. And after 1 hr of download if lg up is going to say incorrect kdz then why time waste
@SandyKick first we have to upgrade it to 6.0 to see everything goes welll then decide to upgrade it to 7.0
I have been searching for v20L kdz link but which model it is the huge problem
as we can not flash H901 kdz.
f600L?
F600s?
F600K?
There are three model with several updates. :/ Pretty confusing right.
Click to expand...
Click to collapse
if you see my post here - https://forum.xda-developers.com/showpost.php?p=73087083&postcount=7
in the scrrenshot you can see mine is F600S model. try in linux terminal (adb devices) you can come to know whether it is L / S / K model
I had the LG V10 with Android 6 rooted and I upgraded it to Nougat by flashing the kdz version 30b with the already installed TWRP. For various reasons, I had to reinstall the stock version of the OS (30b), which removed TWRP from the phone. Now, I want to reinstall TWRP to root it again. Currently, I have the 30c version (updated from 30b with the false hope that the below problem would be fixed) with the bootloader unlocked. However, when I try to flash the TWRP image file (or any recovery images, even the stock recovery image), I always receive the following error:
Code:
fastboot flash recovery twrp-3.0.0-0-h901.img
target reported max download size of 536870912 bytes
sending 'recovery' (31748 KB)...
OKAY [ 1.194s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time: 1.212s
I tried also to restore the rooted Android 6 KDZ (which did not gave me the above problems) using LGUP but it tells me that there is an "antirollback" problem because the version I want to install is older than the one I have. Then I tried to install the TWRP TOT file with LGUP but it gives me a communication error when it starts upgrading.
I think the solution would be to rollback to Android 6, install TWRP with fastboot working, then flash the rooted Nougat again. However, I cannot find how to rollback to an older Android version without TWRP and I cannot install TWRP with the current Android version. In practice, I am in a loop...
I don't know what else to do. Any help on how can I root my phone now?
@brok85
The simple fastboot commands for installing custom recovery were patched out sometime in the later MM firmwares. Since you lost root on Nougat, there currently is no option to get TWRP since there is no way to downgrade to any version of MM even with a modified LGUP.
If and when such a downgrade is possible you'd probably have to roll-back to 30b first instead of going to straight to MM.
chin'ah.girl said:
@brok85
The simple fastboot commands for installing custom recovery were patched out sometime in the later MM firmwares. Since you lost root on Nougat, there currently is no option to get TWRP since there is no way to downgrade to any version of MM even with a modified LGUP.
If and when such a downgrade is possible you'd probably have to roll-back to 30b first instead of going to straight to MM.
Click to expand...
Click to collapse
I have already rolled back to 30b. Antirollback check passes successfully as long as you want to flash the same Android version, e.g., Android 7...
Wouldn't it be possible to modify the 30b so that we can get those fastboot commands back? that would fix the problem without need to roll back to MM...
Unfortunately we can't modify fastboot commands at the ROM level because we have no way of flashing a modified ROM to the device that would allow the commands to go through. If we were it would be even more simple to flash a pre-rooted ROM through LGUP, but that has already been confirmed not to work as well.
So basically it's either downgrade or exploit a security flaw that allows root on the current ROM, and since no one is currently working on this device (at least to my knowledge) both of those are starting to look less and less likely.
brok85 said:
I have already rolled back to 30b. Antirollback check passes successfully as long as you want to flash the same Android version, e.g., Android 7...
Wouldn't it be possible to modify the 30b so that we can get those fastboot commands back? that would fix the problem without need to roll back to MM...
Click to expand...
Click to collapse
If your on 30b then the dirty cow exploit works, search this forum for it.
Sent from my LG-H901 using XDA Labs
skywalker-live said:
If your on 30b then the dirty cow exploit works, search this forum for it.
Sent from my LG-H901 using XDA Labs
Click to expand...
Click to collapse
Thanks for the suggestion! Would you please link a reference for dirty cow? I found something in the forum but I also read that someone bricked their devices, so it would be better to have the correct procedure.
That information is incorrect, unfortunately. Dirty Cow was patched out in January 2017, the 30b ROM is on May 2017 security patch. I even tried to do it myself and the "adb logcat -s recowvery" command no longer works, hence the reason why we need to downgrade to v20l for the exploit.
chin'ah.girl said:
That information is incorrect, unfortunately. Dirty Cow was patched out in January 2017, the 30b ROM is on May 2017 security patch. I even tried to do it myself and the "adb logcat -s recowvery" command no longer works, hence the reason why we need to downgrade to v20l for the exploit.
Click to expand...
Click to collapse
Except for the fact that 30b increased the anti rollback and we can't go back to 20l.
Sent from my LG-H901 using XDA Labs
@skywalker-live
I'm not entirely certain that's the problem. Any time you flash a ROM with a lower anti-rollback count usually results in a hard brick/9008 mode, not a soft brick. The few times I was able to successfully flash the device that was what happened and the phone was easily recovered from a soft brick with LGUP or LG Bridge. That is unless LG developed away for the bootloader to not be so stringent for easier recovery and less phones needing to be sent back to the factory. Also I believe the G5 was able to downgrade between MM and N.
Either way for us users who intentionally/unintentionally upgraded and lost root we don't have any options at the moment.
@chin'ah.girl. That is the whole point of anti roll back, to prevent going backwards, in this case it closes the last exploit used for rooting. This phone started with full fastboot capability on android 5.1.1. (yay we did everything like normal dev phones) Then with 6.0 LG removed fastboot flashing commands (unlocked bootloader that can't do anything), the dirty cow exploit gave us temp root to install twrp. There were 3 updates for the h901 in 6.0. The first 2 were ARB 0, the 3rd ("security" update) increased ARB to 1. Then 7.0 came and ARB increased to 2, because LG patched dirty cow. In a way ARB is designed to brick your phone if you force it, sure our phones are recoverable but only with the same version you started with. On newer LGs (v20? and newer) it just warns you and won't let you downgrade. I've looked back at all the posts from when 7.0 (30b) was released and anyone on unrooted, untwrped software has been stuck there. The only way to have root/ twrp on 30b is to have flashed a safely created stock rom in twrp. Even the best devs for this phone are stuck on 30b. I'm even looking at different brands unless someone can root the latest LG firmwares ( I would like a v20 but all my local stores only have the latest firmwares in stock).
Sent from my LG-H901 using XDA Labs
Well I guess having a soft brick with anti-rollback is better than having 9008 (I know it's also possible to recover from this mode but much more work is involved). I definitely know that currently no one has made progress because I'm one of the people in those threads. Haha!
So I guess that leaves us with hoping someone finds an exploit in current firmware...or buying a new phone like you suggested.
OOOHHHHH NO.. i just got my v10 today hoping to root and all but it's in 30c already.. and from what i have been reading in this thread... sounds like i'm doomed.. i have never used a phone without root...... unlucky me... my love for v10 got me in trouble........
skywalker-live said:
@chin'ah.girl. That is the whole point of anti roll back, to prevent going backwards, in this case it closes the last exploit used for rooting. This phone started with full fastboot capability on android 5.1.1. (yay we did everything like normal dev phones) Then with 6.0 LG removed fastboot flashing commands (unlocked bootloader that can't do anything), the dirty cow exploit gave us temp root to install twrp. There were 3 updates for the h901 in 6.0. The first 2 were ARB 0, the 3rd ("security" update) increased ARB to 1. Then 7.0 came and ARB increased to 2, because LG patched dirty cow. In a way ARB is designed to brick your phone if you force it, sure our phones are recoverable but only with the same version you started with. On newer LGs (v20? and newer) it just warns you and won't let you downgrade. I've looked back at all the posts from when 7.0 (30b) was released and anyone on unrooted, untwrped software has been stuck there. The only way to have root/ twrp on 30b is to have flashed a safely created stock rom in twrp. Even the best devs for this phone are stuck on 30b. I'm even looking at different brands unless someone can root the latest LG firmwares ( I would like a v20 but all my local stores only have the latest firmwares in stock).
Sent from my LG-H901 using XDA Labs
Click to expand...
Click to collapse
What is the difference between a rooted .kdz and a rooted .img?
We can flash a .kdz with LGUP so we would not need the TWRP in the first place. Why is not possible to build a rooted version of the 30b and generate a .kdz to flash with LGUP?
It is probably a stupid question but I am kind of ignorant in this matter...sorry for any blasphemy I may have involuntarily said above
brok85 said:
What is the difference between a rooted .kdz and a rooted .img?
We can flash a .kdz with LGUP so we would not need the TWRP in the first place. Why is not possible to build a rooted version of the 30b and generate a .kdz to flash with LGUP?
It is probably a stupid question but I am kind of ignorant in this matter...sorry for any blasphemy I may have involuntarily said above
Click to expand...
Click to collapse
Unfortunately those that are working to patch lgup to flash rooted .kdz's are still unsuccessful. But that has been everyone's hope for quite a while. Injecting root into a .kdz changes its signature, and then lgup fails to flash it.
Sent from my LG-H901 using XDA Labs
@chin'ah.girl if @ PlayfulGod is working on this let me know. I helped back in the day getting the lg flex running twrp. Yall might want to look into flashing a modified bootloader from a phone that is equal. Like we used the G2 aboot to bypass lgup errors it and got loki working. But then lg wouldnt not rls the source so we could get a stable kernel. But we did end up having twrp and root. . Check the aboot file. I will see if @djrbliss or maybe @Dees_Troy will jump in here and see what happens. idk how close the aboot is to the v20 or sense there was a working aboot for this phone you might be able to force a older aboot. it might softbrick but then you should be able to use fastboot cmds. hope this helps. Inbox me if you need. If I can find the old aboot file that worked I will play around with it
Gotroot said:
@chin'ah.girl if @ PlayfulGod is working on this let me know. I helped back in the day getting the lg flex running twrp. Yall might want to look into flashing a modified bootloader from a phone that is equal. Like we used the G2 aboot to bypass lgup errors it and got loki working. But then lg wouldnt not rls the source so we could get a stable kernel. But we did end up having twrp and root. . Check the aboot file. I will see if @djrbliss or maybe @Dees_Troy will jump in here and see what happens. idk how close the aboot is to the v20 or sense there was a working aboot for this phone you might be able to force a older aboot. it might softbrick but then you should be able to use fastboot cmds. hope this helps. Inbox me if you need. If I can find the old aboot file that worked I will play around with it
Click to expand...
Click to collapse
As far as I know no one is working on this as it seems most devs have given up and have moved onto the v20, or if they are working on it they haven't said so in the forums that I've seen. With that in mind help from anyone would be greatly appreciated, even if it is a long shot!
The aboot from the v20 might work.. It just need to be edited. I have played around with downgrading. Idk why lg seems to do this with certain models. The flex was a beast of a phone still is. But they wouldnt rls the scource kernel. Lg said they did but it wouldnt compile it was missing all kinds of drivers. Lg has lost all my respect
Any hope on rooting stock Nougat now? My V10 bootlooped and I sent it into LG and of course they flashed stock Nougat recovery so my TWRP is gone.
xxcmb3k3xx said:
Any hope on rooting stock Nougat now? My V10 bootlooped and I sent it into LG and of course they flashed stock Nougat recovery so my TWRP is gone.
Click to expand...
Click to collapse
Welcome to the train bro,..... None for now...
skywalker-live said:
@chin'ah.girl. That is the whole point of anti roll back, to prevent going backwards, in this case it closes the last exploit used for rooting. This phone started with full fastboot capability on android 5.1.1. (yay we did everything like normal dev phones) Then with 6.0 LG removed fastboot flashing commands (unlocked bootloader that can't do anything), the dirty cow exploit gave us temp root to install twrp. There were 3 updates for the h901 in 6.0. The first 2 were ARB 0, the 3rd ("security" update) increased ARB to 1. Then 7.0 came and ARB increased to 2, because LG patched dirty cow. In a way ARB is designed to brick your phone if you force it, sure our phones are recoverable but only with the same version you started with. On newer LGs (v20? and newer) it just warns you and won't let you downgrade. I've looked back at all the posts from when 7.0 (30b) was released and anyone on unrooted, untwrped software has been stuck there. The only way to have root/ twrp on 30b is to have flashed a safely created stock rom in twrp. Even the best devs for this phone are stuck on 30b. I'm even looking at different brands unless someone can root the latest LG firmwares ( I would like a v20 but all my local stores only have the latest firmwares in stock).
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Click to collapse
Among the marshmallows for H901, I have seen 20e, 20j and 20l here. And I have myself seen that 20e is on ARBv1 while 20j and 20l are on ARBv2 just like 30b and 30c. So 30b and 30c must be downgradable to 20j or 20l via LGUP due to having the same ARB version i.e. 2.
You can yourself verify the ARB versions by extracting the KDZ, then DZ and then searching for SW_ID in either ABOOT or SBL1 partition images. They both contain the same string whose 8th-last digit shows the ARB version of that KDZ.
I have tried flashing 20j and 20l on my h901 30b via LGUP. All checks pass as well as many partitions including modem, boot, laf, factory, recovery, aboot etc. are flashed but on 23% while flashing system partition the 0x2000 Invalid Command Response is shown by LGUP. Can anyone please try this downgrade and let me know what they get?
Would it be due to the reason that I am flashing H901BK files over H901?
Hi guys, i recently bought an used LG G5, after checking out the IMEI with an LG representative via email, it turns out i have the marketing version. I tried upgrading to 8.0 on my own using the regular software update on the phone with no success. I tried using LG Bridge, where it says that "your phone is up to date" however after i press ok for that message, it says that there is an update available "H85010DX". After i click to continue to get to the downloading phase i get the error message "The update cannot be downloaded because there was a problem with the server"
Knowing all of this, is there a way, no matter what for me to upgrade to Oreo? Thanks for ur time guys!
Try with officila KDZ upgrade for H850, using Uppercut and LGUP.
You can find the firmware here and LGUP and Uppercut (with instructions) here.
tremalnaik said:
Try with officila KDZ upgrade for H850, using Uppercut and LGUP.
You can find the firmware here and LGUP and Uppercut (with instructions) here.
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I am trying right now! Coming with a reply!
Nice! Before trying to flash the KDZ, have you tried to unlock the bootloader with the official LG method? That would allow and easier and safer upgrade via TWRP.
tremalnaik said:
Nice! Before trying to flash the KDZ, have you tried to unlock the bootloader with the official LG method? That would allow and easier and safer upgrade via TWRP.
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Yes, i tried, as i mentioned in my post earlier, they said it cannot be done because my phone model is the marketing version, HOWEVER!!
I DID IT!!!!!!!!! !!!!!!!!! !!!!!!!!!!!!!!!!!!!
I Downloaded LG UP, The LG Drivers and UPPERCUT, A Romanian Firmware of H850 (there wasn't any for my LG G5 Model so i tried that one, same phone specs "what could go wrong?")
AND IT WORKED PERFECTLY!!!!! I Used a weird ass 100 views guide on youtube hahahahaa
Perfect!
Hi, i want to downgrade my phone to Oreo from US998 Pie but my phone is not recognized by the dev patched Lg Up...
It said "There is no Handset connected. Please, connect a handset" when i plug my phone in download mode...
Can someone help me pls ?
Pluginbaby00 said:
Hi, i want to downgrade my phone to Oreo from US998 Pie but my phone is not recognized by the dev patched Lg Up...
It said "There is no Handset connected. Please, connect a handset" when i plug my phone in download mode...
Can someone help me pls ?
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Click to collapse
Make sure you are using the Dev Patched LGUP from the Pie KDZ threads. Uninstall any prior version. Read the Troubleshooting Tips in the Pie KDZ threads just below the Dev Patched LGUP installation instructions.
I fixed my problem by flashing US998_20E and it fixed my download mode which appeared to be the problem
Thank you
ChazzMatt said:
Make sure you are using the Dev Patched LGUP from the Pie KDZ threads. Uninstall any prior version. Read the Troubleshooting Tips in the Pie KDZ threads just below the Dev Patched LGUP installation instructions.
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Hmm no link??? I have the same issue, it all worked and I was going to downgrade again to version A7 and then out of the sudden it does not work anymore. SIGH, so sick and tired of this nonsense.
Whatever it took, I downloaded something which seemed to work and I have downgraded to version 7 - sadly I seem to have lost the link. But here are the files for installing it, first install the msi file and then copy the things in the folder LGUP_pie to the place where it was installed and override anything. And it should work.
So now my F800K is now again running A7, downgraded from A9! Back to looking into rooting and fixing boot loader.
install msi file and copy the things in folder pie into the installation and override it. At least it fixed my issue and downgraded from version 9 to 7.
Just go to ChazzMatt's Stock KDZ thread for your model. It has all the links you need for the correct LGUP version AND the KDZ file AND anything else you're likely to need. PLUS exact steps to install LGUP and perform the flashing. Oh, AND troubleshooting steps in case you have problems.
It's true, it DOES require that you go to the V30 ROM section and click on the thread for your model