I just got a new G4 from Sprint that oddly enough is still on ZV4. However, I do want to update it to either zv5 or zv6 and not to zv9, the ota it is currently prompting me to install. Is there any way to do so? Thanks in advance.
I have all the files and everything is setup to flash ZV5 with the TOT. I just need clarification as to whether or not it is safe to do this. I've tried searching but haven't found anything concrete.
na7thana said:
This should work as most problems occur when you decide to downgrade. Like how you can't downgrade to ZV5 if you're on ZV6 or ZV9 but going from ZV4 to ZV5 shouldn't be a problem!
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Click to collapse
Thanks for the clarification. I went ahead and upgraded using the TOT for ZV5 without a hitch, rooted and sim unlocked it successfully as well. I just could not find anything that made me confident the TOT could be used to upgrade. I knew it could be used to restore if you were already on the version corresponding to the TOT, and I didn't want to risk bricking this awesome phone. Now I know TOT's can be used to upgrade.
na7thana said:
This should work as most problems occur when you decide to downgrade. Like how you can't downgrade to ZV5 if you're on ZV6 or ZV9 but going from ZV4 to ZV5 shouldn't be a problem!
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Click to collapse
Need help... My phone has no internet after ZV6 its has 3 month stuck no internet.. My question, Its safe if downgrade from ZV6 to ZV4 ?
Many thanks
Related
Hey guys,
First off, i thought I had already posted this question but I can not even find it in my ousting of posts. So I want to apologize I advance of this ends up as a duplicate.
I currently have a Sprint LG4 that upgraded to ZVA and I lost hotspot. Trying any method to downgrade, fails. Using LGUP fails with "SPC code does not match." and LG Flash Tool says error at DoDownload and nothing other than a code, 00000064. I have also tried the method using systemZV6.img and dd via SendCommand but nothing happens at all with that one after i press Enter and wait a few his.
I have tried various USB ports and all drivers I could find on these forums. Windows 7. Any other info I can provide to help you help me? I am no stranger to flashing other phones, but having no luck here. Searching the web hasn't turned up any help. Thanks in advance.
Is the phone bricked now? You can't downgrade from ZVA to ZV6, because the qfuse version is different.
Thanks apparently i missed that one somewhere as a search via duck duck go never gave turned up results that stated so. In fact the last posts of http://forum.xda-developers.com/sprint-g4/general/how-to-free-mobile-hotspot-root-t3165049/page16 led me to believe it was possible.
Fortunately it is not bricked. Thanks for your reply.
goumba said:
Thanks apparently i missed that one somewhere as a search via duck duck go never gave turned up results that stated so. In fact the last posts of http://forum.xda-developers.com/sprint-g4/general/how-to-free-mobile-hotspot-root-t3165049/page16 led me to believe it was possible.
Fortunately it is not bricked. Thanks for your reply.
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Click to collapse
Since it is not bricked, you could probably fix it by flashing the ZV9 update. I don't think there is a tot for ZVA yet, so you might possibly have to wait until there is one available.
ironbesterer said:
Is the phone bricked now? You can't downgrade from ZVA to ZV6, because the qfuse version is different.
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Click to collapse
if mine is ZVA, can I use the path ZVA -> ZV9 -> ZV6 to downgrade to ZV6? I mean using LGUP.
cbr150r said:
if mine is ZVA, can I use the path ZVA -> ZV9 -> ZV6 to downgrade to ZV6? I mean using LGUP.
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Click to collapse
I don't think you can even use ZV9. I know I said you probably could, but I forgot that's the whole reason you're here; because the qfuse version is different. You will have to wait until a ZVA TOT is available.
I could be wrong, but I'm not a dev. At least be thankful your phone isn't completely bricked.
I just downgrade from ZVA to ZV6 using LGUP. Just the first boot take more time than usual but I did factory reset and everything fine.
qfuse is not different. It should work fine.
netibiri said:
I just downgrade from ZVA to ZV6 using LGUP. Just the first boot take more time than usual but I did factory reset and everything fine.
Click to expand...
Click to collapse
Can you give more detail? I have used the TOT and instructions from http://forum.xda-developers.com/sprint-g4/development/restore-sprint-lg-ls991-zv6-tot-t3213196 and always get an SPC does not match error.
Having issues as well. ZVA>ZV6. When I dl the tot file and run it in LG up it says it's not a valid tot file. Also tried the LG flash tool method and get an error message. Any help?
goumba said:
Can you give more detail? I have used the TOT and instructions from http://forum.xda-developers.com/sprint-g4/development/restore-sprint-lg-ls991-zv6-tot-t3213196 and always get an SPC does not match error.
Click to expand...
Click to collapse
I just followed this http://forum.xda-developers.com/showpost.php?p=64197582&postcount=1
No problem, nothing special to do.
Hope this help you
Anyone try to update back to ZVA after root?
Once rooted you can't use the OTA updates because they will fail. They check for that kind of crap. Sucks, but you're stuck on ZV6 with root until the devs work out a bootloader unlock, which may take some serious time. LG sucks major donkey balls because they have some pretty secure bootloaders, now. The best thing you can do is stick with ZV6 at the moment. I know, I know, security patches! Marshmallow! Still, wait until they get something worked out.
Thanks, i figured. Only reason i ask is because im having an issue with mircast. Not sure if its because im on ZV6 or because im on UltraPop..
So we downgrade zva to zv6 or not
Can anyone successfully downgraded to zv6 if YeS so how
Br
Shahzaib Jahangir
Shabby The Dev said:
So we downgrade zva to zv6 or not
Can anyone successfully downgraded to zv6 if YeS so how
Br
Shahzaib Jahangir
Click to expand...
Click to collapse
Yes you can, I did it myself. The thread that shows you how is in the development section
I don't own a LG g4 but my buddies does and he isn't experienced with rooting/unlocking phones and has a LG g4, and was saying "there was a root method but it got patched before he could try it."
If there is a way to do it could you please link me to it?
Thanks
Are you sure he wasn't referring to the ZV6 root? Currently you can't root anything above ZV6. If you have ZVA or earlier, you can use LGUP or whatever it's called to revert back to ZV6, then root.
If your phone is patched to ZVB, which is the current version, then you cannot root, and also you cannot roll back to ZVA to perform a root, and are stuck. The only option for ZVB is to install the mellowmallow ROM.
Recently i was looking for way to disable 2 cores on friends LG G4 and i found tutorial on youtube in witch is explanation how to downgrade from android 6.0 to 5.1:
"If you are on Android Marshmallow (6.0), not Lollipop (5.1), you will have to perform a downgrade (factory reset) first prior to flashing ILAPO fix, using the above mentioned LGUP app - instead of ticking "Upgrade" box, click the "Refurbish" box."
So my question is did someone tried this method to downgrade from ZVB and is it safe to try it myself - will LGUP just refuse to flash my LS991 or it will brick it if this doesn't work?
Let's bump this. I'd love to get rid of this damn MM crap.
vlabns said:
Recently i was looking for way to disable 2 cores on friends LG G4 and i found tutorial on youtube in witch is explanation how to downgrade from android 6.0 to 5.1:
"If you are on Android Marshmallow (6.0), not Lollipop (5.1), you will have to perform a downgrade (factory reset) first prior to flashing ILAPO fix, using the above mentioned LGUP app - instead of ticking "Upgrade" box, click the "Refurbish" box."
So my question is did someone tried this method to downgrade from ZVB and is it safe to try it myself - will LGUP just refuse to flash my LS991 or it will brick it if this doesn't work?
Click to expand...
Click to collapse
I would not try it. You run risking bricking your phone. I read the tutorial. I think there are 2 problems.
Correct me if I am wrong, but.........
1) I think ILAPO fix may not be compatible to the sprint variant.......at least the spring model LS991 is not included on the compatibility list.
2) The tutorial says if you are on MM 6, you need to first downgrade, by getting the proper Stock KDZ or TOT, then flashing lollipop ..........which is not possible on ZVB.
The "REFURB" option is for applying a STOCK rom, not the ILAPO fix
So as the title suggests, I lost my files, root, xposed, everything.
When I first got my phone it was on like ZV5 or something, whichever one you could dd an image after injecting root. This one came loaded with ZVC, so I'm unable to stay on the easily rooted version obviously. Am I basically stuck now? Or is there a way to root ZVB after rolling back (as I understand it, trying to roll back further results in hard brick) ?
agentfusion said:
So as the title suggests, I lost my files, root, xposed, everything.
When I first got my phone it was on like ZV5 or something, whichever one you could dd an image after injecting root. This one came loaded with ZVC, so I'm unable to stay on the easily rooted version obviously. Am I basically stuck now? Or is there a way to root ZVB after rolling back (as I understand it, trying to roll back further results in hard brick) ?
Click to expand...
Click to collapse
You cannot downgrade past ZVB on the LS991. You can flash ZVB, but nothing earlier. ZVB and ZVC has anti-rollback, and if it sees anything older than ZVB it will brick.
poog said:
You cannot downgrade past ZVB on the LS991. You can flash ZVB, but nothing earlier. ZVB and ZVC has anti-rollback, and if it sees anything older than ZVB it will brick.
Click to expand...
Click to collapse
... Yeah. That's not what I was asking. I know (as I said) that I can't roll back past ZVB. I was asking if ZVB can be rooted if I roll back to it, or if I'm stuck with unrooted ZVC because LG decided to update my phone without asking?
Sent from my LG G4 using XDA Labs
agentfusion said:
... Yeah. That's not what I was asking. I know (as I said) that I can't roll back past ZVB. I was asking if ZVB can be rooted if I roll back to it, or if I'm stuck with unrooted ZVC because LG decided to update my phone without asking?
Sent from my LG G4 using XDA Labs
Click to expand...
Click to collapse
You cannot root your phone. There is no root for it on ZVB or ZVC.
I want to share my experience with you guys.
So I've updated my LG G4 to ZVC firmeware, and read that is not possible to root it, and no unlock chances therefore. And since is really difficult to make downgrade once you've reached this version, I was totally freaked out that I wouldn't be able to unlock it.
And thanks to some brave community fellows that tried this method, I felt encouraged to do it.
In order to unlock your network, you have use a Global rom for ZVB firmeware, YES, it also works for ZVC. Said that, I have to tell you that this it's a risky method, and if you don't properly follow steps, you'll hard brick your phone, so do it at your own risk.
Here is the link:
http://forum.xda-developers.com/spr...-mellowmallow-debloated-60fps-camera-t3358340
Please, make sure to thank the OP and developers. Buy 'em a beer or something
Going from ZVC firmware, did you have to deviate at all from the instructions at that link you provided? Or did you get success following it exactly as written? I think you convinced me to take the plunge.
(Well, also to be fully honest, now that the V20 is available, I'm more willing to take risks with my beloved LG G4 in the secret hope I might break it and justify the expensive upgrade as being forced into it)
KingFatty said:
Going from ZVC firmware, did you have to deviate at all from the instructions at that link you provided? Or did you get success following it exactly as written? I think you convinced me to take the plunge.
(Well, also to be fully honest, now that the V20 is available, I'm more willing to take risks with my beloved LG G4 in the secret hope I might break it and justify the expensive upgrade as being forced into it)
Click to expand...
Click to collapse
Hi, just go to the link and follow the instructions there, you'll be alright.
I made this threat since everyone was confused about this firmeware version, and I wanted to share with you that YOU CAN UNLOCK the network once you are in ZVC as I DID. So no worries, you'll be able to unlock the sim from your LG G4 ZVC, using the ZVB procedure.
maxfloreshn said:
Hi, just go to the link and follow the instructions there, you'll be alright.
I made this threat since everyone was confused about this firmeware version, and I wanted to share with you that YOU CAN UNLOCK the network once you are in ZVC as I DID. So no worries, you'll be able to unlock the sim from your LG G4 ZVC, using the ZVB procedure.
Click to expand...
Click to collapse
you downgrade to ZVB and follow the instructions? or only download the global version of ZVB from the post and realize the process when the phone stay on ZVC?
DaNiElCoRe said:
you downgrade to ZVB and follow the instructions? or only download the global version of ZVB from the post and realize the process when the phone stay on ZVC?
Click to expand...
Click to collapse
In this particular case, just Install the ZVB Global rom (Even if you have ZVC like me). No downgrade needed. Once you've installed the ZVB Global rom (FOLLOWING THE ALL THE STEPS of the original post) you'll have your phone UNLOCKED and running ZVB.
In other words, it is not a downgrade process (Although you'll be downgrading your phone from ZVC to ZVB) NO ADDITIONAL STEPS for it, do like your device was on ZVB and please, don't skip any step and you'll be fine.
It worked for me, it will work for you. Good luck
maxfloreshn said:
In this particular case, just Install the ZVB Global rom (Even if you have ZVC like me). No downgrade needed. Once you've installed the ZVB Global rom (FOLLOWING THE ALL THE STEPS of the original post) you'll have your phone UNLOCKED and running ZVB.
In other words, it is not a downgrade process (Although you'll be downgrading your phone from ZVC to ZVB) NO ADDITIONAL STEPS for it, do like your device was on ZVB and please, don't skip any step and you'll be fine.
It worked for me, it will work for you. Good luck
Click to expand...
Click to collapse
LGUP can flash img files?
klurrant said:
LGUP can flash img files?
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Click to collapse
Yes, it does!
Please everybody, don't be afraid. Just follow the instructions and you'll be alright.
Ive seen this metthod done a bunch of times sucsessfuly. Ill vouch on it too. Is dangerous but follow instructions and there will be no issues
---------- Post added at 12:18 PM ---------- Previous post was at 12:17 PM ----------
klurrant said:
LGUP can flash img files?
Click to expand...
Click to collapse
Up only flashes kdzs and tots
maxfloreshn said:
I want to share my experience with you guys.
So I've updated my LG G4 to ZVC firmeware, and read that is not possible to root it, and no unlock chances therefore. And since is really difficult to make downgrade once you've reached this version, I was totally freaked out that I wouldn't be able to unlock it.
And thanks to some brave community fellows that tried this method, I felt encouraged to do it.
In order to unlock your network, you have use a Global rom for ZVB firmeware, YES, it also works for ZVC. Said that, I have to tell you that this it's a risky method, and if you don't properly follow steps, you'll hard brick your phone, so do it at your own risk.
Here is the link:
http://forum.xda-developers.com/spr...-mellowmallow-debloated-60fps-camera-t3358340
Please, make sure to thank the OP and developers. Buy 'em a beer or something
Click to expand...
Click to collapse
Doesnt work for ZVD need help to unlock
yapcogamer said:
Doesnt work for ZVD need help to unlock
Click to expand...
Click to collapse
Did you use LGUP to downgrade to earlier versions first? If I remember correctly, there might be a chance to use the ZVC tot file to revert from ZVD to ZVC?
KingFatty said:
Going from ZVC firmware, did you have to deviate at all from the instructions at that link you provided? Or did you get success following it exactly as written? I think you convinced me to take the plunge.
(Well, also to be fully honest, now that the V20 is available, I'm more willing to take risks with my beloved LG G4 in the secret hope I might break it and justify the expensive upgrade as being forced into it)
Click to expand...
Click to collapse
lol i just came across this one this is funny
KingFatty said:
Did you use LGUP to downgrade to earlier versions first? If I remember correctly, there might be a chance to use the ZVC tot file to revert from ZVD to ZVC?
Click to expand...
Click to collapse
we got an unlock thats works now
TheMadScientist420 said:
we got an unlock thats works now
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Click to collapse
is the unlock for zvd? if so do you by chance have a link id really appreciate it
gillim74 said:
is the unlock for zvd? if so do you by chance have a link id really appreciate it
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Click to collapse
Its a give or take thing some work some dont. Ill link wuen i get home
https://forum.xda-developers.com/sprint-g4/general/gsm-unlock-root-users-t3628314
TheMadScientist420 said:
Its a give or take thing some work some dont. Ill link wuen i get home
https://forum.xda-developers.com/sprint-g4/general/gsm-unlock-root-users-t3628314
Click to expand...
Click to collapse
Thanks it didnt work though.i see theres a rooted zvd system img you commented in its thread.do you know id it works or how your supposed to flash it.i did the dd commands but it instantly says fail
gillim74 said:
Thanks it didnt work though.i see theres a rooted zvd system img you commented in its thread.do you know id it works or how your supposed to flash it.i did the dd commands but it instantly says fail
Click to expand...
Click to collapse
zvd isnt rooted zv6 is the only rooted firmware and anything zvb and above cannot downgrade either
hardbrick can and will occur
a paid company or sprint is the only methods available unless root is found for zvb and greater
TheMadScientist420 said:
zvd isnt rooted zv6 is the only rooted firmware and anything zvb and above cannot downgrade either
hardbrick can and will occur
a paid company or sprint is the only methods available unless root is found for zvb and greater
Click to expand...
Click to collapse
Ok thanks i guess that post was junk.
gillim74 said:
Ok thanks i guess that post was junk.
Click to expand...
Click to collapse
if u will link it for me u might be able to if ure on zvd flash the mellow mallor international but no root
TheMadScientist420 said:
zvd isnt rooted zv6 is the only rooted firmware and anything zvb and above cannot downgrade either
hardbrick can and will occur
a paid company or sprint is the only methods available unless root is found for zvb and greater
Click to expand...
Click to collapse
Ok i was wrong its unlocked zvd system.img https://forum.xda-ought ofdevelopers.com/sprint-g4/general/unlocked-zvd-img-t3637359 does it mean sim unlocked and thats what i was trying to flash but just says fail.again thank you for all your help its really appreciated trying to sim unlock for my mom as i have the g6.when i first saw your screen nane first thing i thought of was breaking bad
gillim74 said:
Ok i was wrong its unlocked zvd system.img https://forum.xda-ought ofdevelopers.com/sprint-g4/general/unlocked-zvd-img-t3637359 does it mean sim unlocked and thats what i was trying to flash but just says fail.again thank you for all your help its really appreciated trying to sim unlock for my mom as i have the g6.when i first saw your screen nane first thing i thought of was breaking bad
Click to expand...
Click to collapse
ive never dont the method but can descibe it to a T
on marshmallow sprint closed the send command port on g4 so a very dangerous technique in opening it as follows kinda. you open lgup and flash some tot dont know which one but as soon as it hits 9% this is when the send command port gets opened You have to unplug the usb cable exactly rite time and the send port stays open then u can dd in the system image.
now it is dangerous can hard brick device but im digging up the links now