Hello,
I Just bought from a website a " refurbished " LG V20 and sadly when I turned it on I was shocked it was on att but it's unlocked, but sadly since it's at&t I can't get software updates, is there a way that I can have a stock rom on it instead off at&t? if yes can you guys show me how ?
Note: I have 0 experience and how to do these kind of things but I can follow guide lines.
Search for backup EFS. Do it.
Then feel free to flash the US996 KDZ. Again, if you search, there is plenty of info.
-- Brian
runningnak3d said:
Search for backup EFS. Do it.
Then feel free to flash the US996 KDZ. Again, if you search, there is plenty of info.
-- Brian
Click to expand...
Click to collapse
Yep no spoon ? feeding
Sent from my LG-H910 using XDA Labs
thank you fr the reply!
I did this set uphttps://forum.xda-developers.com/v20/how-to/guide-root-twrp-lg-v20-using-dirtysanta-t3722278 and i finshed it but now I am a bit confused on which rom to download follow guide lines , giving a help wull be nice >.>
MrSalue said:
thank you fr the reply!
I did this set uphttps://forum.xda-developers.com/v20/how-to/guide-root-twrp-lg-v20-using-dirtysanta-t3722278 and i finshed it but now I am a bit confused on which rom to download follow guide lines , giving a help wull be nice >.>
Click to expand...
Click to collapse
Again no spoon ? feeding, try them out and find the one you like
Sent from my LG-H910 using XDA Labs
cnjax said:
Again no spoon ? feeding, try them out and find the one you like
Sent from my LG-H910 using XDA Labs
Click to expand...
Click to collapse
I don't want to "try" I just want to know which is a normal stock rom with no bloatware that I can have root on x.x!!
you are making it so difficult on me xD
MrSalue said:
I don't want to "try" I just want to know which is a normal stock rom with no bloatware that I can have root on x.x!!
you are making it so difficult on me xD
Click to expand...
Click to collapse
No one is making anything difficult, search the forum, read the OP of rom threads until you find what you're looking for, how difficult is it to do some reading,? #NoSpoonFeeding
Sent from my LG-H910 using XDA Labs
Download patched LG UP
Download US996 10p KDZ
Place your phone into download mode. With the phone off, hold vol up and plug in the USB cable.
In LG UP, use the DUMP option and select modemst1, modemst2, persist, persistent and misc
Then while still in LG UP, use partition DL mode, select the US996 KDZ, select all partitions, and flash.
Enjoy your H910 converted to a US996.
If you have data or voice problems after the conversion, then you will have to root to fix it. You can't root on 10p firmware, so you will have to flash older firmware. Even though you will have flashed the US996 firmware, you can use the H910 root procedure here. Once you are rooted, you can flash a US996 stock ROM via TWRP to return to stock US996 (with or without keeping root -- tis up to you).
Once rooted, you can flash modemst1 and modemst2 (ignore the others, it is just a good idea to have backups of them) that you backed up in step 3.
Boot to flastboot. With the phone off, hold vol down and plug in the USB cable
fastboot flash C:\path\to\modemst1 modemst1
fastboot flash C:\path\to\modmst2 modemst2
Again, those steps will ONLY be required if for some reason you get unlucky and your EFS gets hosed.
@cnjax Hope that is a chick, cause I decided to hold her hand good.....
-- Brian
runningnak3d said:
Download patched LG UP
Download US996 10p KDZ
Place your phone into download mode. With the phone off, hold vol up and plug in the USB cable.
In LG UP, use the DUMP option and select modemst1, modemst2, persist, persistent and misc
Then while still in LG UP, use partition DL mode, select the US996 KDZ, select all partitions, and flash.
Enjoy your H910 converted to a US996.
If you have data or voice problems after the conversion, then you will have to root to fix it. You can't root on 10p firmware, so you will have to flash older firmware. Even though you will have flashed the US996 firmware, you can use the H910 root procedure here. Once you are rooted, you can flash a US996 stock ROM via TWRP to return to stock US996 (with or without keeping root -- tis up to you).
Once rooted, you can flash modemst1 and modemst2 (ignore the others, it is just a good idea to have backups of them) that you backed up in step 3.
Boot to flastboot. With the phone off, hold vol down and plug in the USB cable
fastboot flash C:\path\to\modemst1 modemst1
fastboot flash C:\path\to\modmst2 modemst2
Again, those steps will ONLY be required if for some reason you get unlucky and your EFS gets hosed.
@cnjax Hope that is a chick, cause I decided to hold her hand good.....
-- Brian
Click to expand...
Click to collapse
Lmao with a nick starting with Mr, you might be in for a surprise
Sent from my LG-H910 using XDA Labs
He got spoon fed
runningnak3d said:
Download patched LG UP
Download US996 10p KDZ
Place your phone into download mode. With the phone off, hold vol up and plug in the USB cable.
In LG UP, use the DUMP option and select modemst1, modemst2, persist, persistent and misc
Then while still in LG UP, use partition DL mode, select the US996 KDZ, select all partitions, and flash.
Enjoy your H910 converted to a US996.
If you have data or voice problems after the conversion, then you will have to root to fix it. You can't root on 10p firmware, so you will have to flash older firmware. Even though you will have flashed the US996 firmware, you can use the H910 root procedure here. Once you are rooted, you can flash a US996 stock ROM via TWRP to return to stock US996 (with or without keeping root -- tis up to you).
Once rooted, you can flash modemst1 and modemst2 (ignore the others, it is just a good idea to have backups of them) that you backed up in step 3.
Boot to flastboot. With the phone off, hold vol down and plug in the USB cable
fastboot flash C:\path\to\modemst1 modemst1
fastboot flash C:\path\to\modmst2 modemst2
Again, those steps will ONLY be required if for some reason you get unlucky and your EFS gets hosed.
@cnjax Hope that is a chick, cause I decided to hold her hand good.....
-- Brian
Click to expand...
Click to collapse
Thank you, your post is the first one I found that makes it seem fairly simple.
I have 2 V20 h910s I want to unbrand, one running AT&T version 10m and one running 10r (which complicates matters further), and I would like to avoid installing a bootloader/root/etc. which prevents future updates/upgrades to later software versions (so other existing guides have put me off for multiple reasons).
Is what you listed all I need to do (in both cases), or do I need to root (or bootloader unlock etc.) first?
Can I install any future stock US996 ROMs (ie when Oreo is released) once I have done this, or will I have to reverse the steps and start over with h910/ATT software?
MrSalue said:
I don't want to "try" I just want to know which is a normal stock rom with no bloatware that I can have root on x.x!!
you are making it so difficult on me xD
Click to expand...
Click to collapse
Edit: Brain explained to you rather more profoundly. I rest my case of explaining it further
dark_prince said:
Edit: Brain explained to you rather more profoundly. I rest my case of explaining it further
Click to expand...
Click to collapse
Hi.
I also have a few questions (as I'm new to this and have found conflicting information, and in addition I have two h910 phones running different firmware versions, one v10m and one v10r).
1) My phone's aren't rooted - Is what Brian explained all I need to do, or does his explanation require a bootloader-unlocked/rooted phone to work?
2) Are there any requirements/restrictions (eg. original firmware must be above/below version XYZ - if yes, does it make any sense to update the firmware to the latest AT&T version first)? Can I install any future versions of US996 KDZ that way too?
Thanks in advance.
AWT86 said:
Hi.
I also have a few questions (as I'm new to this and have found conflicting information, and in addition I have two h910 phones running different firmware versions, one v10m and one v10r).
1) My phone's aren't rooted - Is what Brian explained all I need to do, or does his explanation require a bootloader-unlocked/rooted phone to work?
2) Are there any requirements/restrictions (eg. original firmware must be above/below version XYZ - if yes, does it make any sense to update the firmware to the latest AT&T version first)? Can I install any future versions of US996 KDZ that way too?
Thanks in advance.
Click to expand...
Click to collapse
1. For 10m one, follow Brian's guide, for v10r, follow Brian's guide. Once you have unlocked bootloader/rooted, you have conceded official updates. Also there are no stock KDZ restoring methods to revert back to H910 but you can try a method to go bone-stock H910 if you're rooted and have TWRP recovery.
2. For H910? no, and no need to upgrade to latest att firmware. You can just jump the gun to US996
Edit: Make sure you take full backup dump with patched LGUP (from Brian's guide as well).
Thanks
dark_prince said:
1. For 10m one, follow Brian's guide, for v10r, follow Brian's guide. Once you have unlocked bootloader/rooted, you have conceded official updates. Also there are no stock KDZ restoring methods to revert back to H910 but you can try a method to go bone-stock H910 if you're rooted and have TWRP recovery.
2. For H910? no, and no need to upgrade to latest att firmware. You can just jump the gun to US996
Edit: Make sure you take full backup dump with patched LGUP (from Brian's guide as well).
Click to expand...
Click to collapse
Thanks a lot.
Two final questions (sorry to bother you):
1) Do I need to root/bootloader-unlock the device BEFORE proceeding to use Brian's guide, or can I just dump & then flash US996 straight away without rooting? (I read somewhere that root is only required if the signals fail after US996 conversion, but I'd rather ask than to skip root / just flash and then realize I messed up).
2) Will EFS be backed up in the process of dumping everything using patched LGUP, or do I need to back up EFS manually/seperately? If the latter is what I need to do, what is the best method? (I've found multiple, but most of them require root, which I'd rather avoid unless necessary)
AWT86 said:
Thanks a lot.
Two final questions (sorry to bother you):
1) Do I need to root/bootloader-unlock the device BEFORE proceeding to use Brian's guide, or can I just dump & then flash US996 straight away without rooting? (I read somewhere that root is only required if the signals fail after US996 conversion, but I'd rather ask than to skip root / just flash and then realize I messed up).
2) Will EFS be backed up in the process of dumping everything using patched LGUP, or do I need to back up EFS manually/seperately? If the latter is what I need to do, what is the best method? (I've found multiple, but most of them require root, which I'd rather avoid unless necessary)
Click to expand...
Click to collapse
1. Make a backup dump and flash US996 rom.
2. I havent known anyone who ran into corrupted EFS after crossflashing between H910/H915/US996. The restoring of modemst1,modemst2,modem, misc solves the problem of No baseband/IMEI. Do that at your own risk, there is no guarantee that you'll be safe from apocalypse
AWT86 said:
Thanks a lot.
Two final questions (sorry to bother you):
1) Do I need to root/bootloader-unlock the device BEFORE proceeding to use Brian's guide, or can I just dump & then flash US996 straight away without rooting? (I read somewhere that root is only required if the signals fail after US996 conversion, but I'd rather ask than to skip root / just flash and then realize I messed up).
2) Will EFS be backed up in the process of dumping everything using patched LGUP, or do I need to back up EFS manually/seperately? If the latter is what I need to do, what is the best method? (I've found multiple, but most of them require root, which I'd rather avoid unless necessary)
Click to expand...
Click to collapse
You do not have to root, just follow my post for flashing the US996 KDZ.
You only have to root IF you have signal issues, because that is the only way to fix them. Even then, you don't have to stay rooted.
I doubt you will have signal issues, but make sure you backup those partitions before you flash the US996 KDZ.
-- Brian
runningnak3d said:
You do not have to root, just follow my post for flashing the US996 KDZ.
You only have to root IF you have signal issues, because that is the only way to fix them. Even then, you don't have to stay rooted.
I doubt you will have signal issues, but make sure you backup those partitions before you flash the US996 KDZ.
-- Brian
Click to expand...
Click to collapse
Hi.
I'm having trouble with LGUP. When I try to dump all phone files, it gives me an error 0x2000 saying "not enough hard disk space", even though there should be more than enough.
Device Manager recognizes the device under Ports as "LGE AndroidNet USB Serial Port (COM8).
Help would be highly appreciated.
Thanks in advance.
EDIT: I managed to dump the files you recommended, but what about the rest? shouldn't I back those up too?
---------- Post added at 11:51 AM ---------- Previous post was at 11:24 AM ----------
runningnak3d said:
You do not have to root, just follow my post for flashing the US996 KDZ.
You only have to root IF you have signal issues, because that is the only way to fix them. Even then, you don't have to stay rooted.
I doubt you will have signal issues, but make sure you backup those partitions before you flash the US996 KDZ.
-- Brian
Click to expand...
Click to collapse
UPDATE: I flashed the first device, but it asked for a password that wasn't set up. UPDATE 2: solved w/ factory reset.
Thanks a lot and sorry for bothering you guys.
Glad you were able to do it.
As far as backing the other files up -- no, you can get those from a KDZ, so no reason to back them up. The partitions I had you backup are specific to your phone(s).
-- Brian
runningnak3d said:
You do not have to root, just follow my post for flashing the US996 KDZ.
You only have to root IF you have signal issues, because that is the only way to fix them. Even then, you don't have to stay rooted.
I doubt you will have signal issues, but make sure you backup those partitions before you flash the US996 KDZ.
-- Brian
Click to expand...
Click to collapse
Now flashed both devices, but noticed that the signals are unstable. Network jumps randomly from no network to 4G and back to no network etc - not in high frequency, but often enough for me to have noticed.
Does that mean I now have to go the route of rooting or is there anything else I can try?
Thanks and sorry to bother you once more.
PS: just noticed it seems to run stable with only 3G enabled, but once 4G is enabled the problem starts.
Good day!
I have a V20 Sprint right after DirtySanta. I want rooted Oreo, I live in Europe (sorry for my English) and use a local telecom operator (CDMA2000 1xEV-DO). There are many incomprehensible I did not find it on the forum.
1) Updating which firmware components increases ARB? I.e. aboot, modem etc.
2) How, having an img file or a kdz file, can I find out the ARB version?
3) Does ARB increase when flashing with any of these methods: "partition dl", "fastboot flash", kdzwriter?
4) Can someone share a Sprint V20 Oreo MODEM and SYSTEM dump?
5) Did someone try to cut the leads on motherboard @runningnak3d https://forum.xda-developers.com/t/...t-to-brick-your-phone-for-funsies-v1.3673622/ ?
6) It seems to me that the best option is to use SYSTEM (and MODEM?) from US99620f (US99620f_00_1120.kdz) . Both LS997 and US996 support CDMA2000 1xEV-DO frequency. US996 contains no bloatware. Does only vs995, us996 and ls997 support СDMA and they all have ARB 1 on Oreo?
7) How best to try:
a) Flash (Installing KDZ US996 7.0 via patched LGUP "partition dl" -> Re-installing the same KDZ via "update") LS997 7.0 to US996 7.0; then flash SYSTEM.img US996 8.0 (+ core mk2000 Oreo US996)? If there is no connection, flash MODEM.img US996 8.0?
Or
b) The same without prior full flashing to US996. Which kernel @askermk2000 and TWRP @Phoenix591 in the case of such a "Frankenstein" to use - LS or US? Which kernel is better to use in this case: LS997_v2.1, US996Santa_v2.2 or US996Santa_v2.2-BETA38? Would it make sense to flash the LS997 8.0 modem?
8) What is the best way to flash the SYSTEM and MODEM? kdzwriter, LGUP "dl partition", "fasboot flash"?
Thank you guys for your work and time!
An LS997 on Oreo is on ARB1 and therefore completely locked down and unrootable, so I don't think anyone has made any dumps from it. No idea which specific portion causes the ARB to change.
I would not recommend cross-flashing a modem unless someone else reported it to be working. You have a much higher risk of completely losing all cellular signal. Does your phone in its current state have signal reception problems?
The rootable LS997 on ARB0 is generally assumed to be stuck on Nougat for stock-based ROMs, and I haven't seen anyone try to flash any stock US996 Oreo parts, so that could be quite risky. If you really want Oreo or higher, then you should consider looking at the LineageOS-type ROMs.
For more things on the LS997, I've written up a bunch of general information in this post on the V20 Subreddit.
how to check ARB status?
nevermind, i got it back how do i confirm ARB?
xxTECRAxx said:
how to check ARB status?
nevermind, i got it back how do i confirm ARB?
Click to expand...
Click to collapse
As far as I know, only the H918 (software version H91810p or later, includes all on Oreo) and LS997 (software version LS997ZV8 or later, includes all on Oreo) have ARB enabled. So you don't have to worry about it on any other model, including the US996. Or did you actually cross-flash the US996 Oreo KDZ onto the LS997?
C D said:
As far as I know, only the H918 (software version H91810p or later, includes all on Oreo) and LS997 (software version LS997ZV8 or later, includes all on Oreo) have ARB enabled. So you don't have to worry about it on any other model, including the US996. Or did you actually cross-flash the US996 Oreo KDZ onto the LS997?
Click to expand...
Click to collapse
I did cross flash my LS997 with US996 10f kdz
xxTECRAxx said:
I did cross flash my LS997 with US996 10f kdz
Click to expand...
Click to collapse
Is it 10f or 20f (your screenshots show 20f)? It's certainly interesting to see US996 stock Oreo cross-flashed onto an old LS997 as I have never seen anyone do it before. Do things actually function normally on it?
Anyway, everything's still on ARB0, so you can downgrade any way you like. If you haven't already done so, you'll need to be on 10f in order to do the rooting procedure.
First, I made a backup of all partitions using LGUP. I flashed the unlocked LS997 with US99620f firmware in the "Partition DL" mode via patched LGUP . I have selected all sections except aboot and abootbak. Then, in fastboot mode, I flashed recovery 3.2.2-1. I`ve tried 3.3.1-1, 3.2.3-5, 3.2.3-4, but they can't do format data correctly. Then I flashed modem, modemst1 and modemst2 from the backup in fastboot mode. Then in recovery I flashed the last mk2000 kernel for Oreo - LS997_v2.1-mk2000.zip . Then magisk 19.5
P.S. I need SDMA, so I was flashing the kernel and modem from LS997. For GSM it may not be necessary.
kokos76 said:
First, I made a backup of all partitions using LGUP. I flashed the unlocked LS997 with US99620f firmware in the "Partition DL" mode via patched LGUP . I have selected all sections except aboot and abootbak. Then, in fastboot mode, I flashed recovery 3.2.2-1. I`ve tried 3.3.1-1, 3.2.3-5, 3.2.3-4, but they can't do format data correctly. Then I flashed modem, modemst1 and modemst2 from the backup in fastboot mode. Then in recovery I flashed the last mk2000 kernel for Oreo - LS997_v2.1-mk2000.zip . Then magisk 19.5
P.S. I need SDMA, so I was flashing the kernel and modem from LS997. For GSM it may not be necessary.
Click to expand...
Click to collapse
Very interesting. So all CDMA signal reception from your carrier and all root functions are working?
And did you use TWRP made for the US996 or LS997?
Any particular reason you went with Magisk 19.5 instead of a later version?
Also, there are a few more stock Oreo kernels for the LS997 that you could try (of course they've never really been tested since the regular LS997 on Oreo is unrootable):
- Phoenix591 has converted some of the mk2000 2.2 versions here
- ezzony's ezV2020 kernel also has an LS997 version here
C D said:
Is it 10f or 20f (your screenshots show 20f)? It's certainly interesting to see US996 stock Oreo cross-flashed onto an old LS997 as I have never seen anyone do it before. Do things actually function normally on it?
Anyway, everything's still on ARB0, so you can downgrade any way you like. If you haven't already done so, you'll need to be on 10f in order to do the rooting procedure.
Click to expand...
Click to collapse
it's 20f, not 10f. I had swapped toms to darn near everything on XDA but never happy with any of them. always something not working or I couldn't remove some built-in crap from so-called "stock" roms.
this last go I forget what I was trying to put on it but she stuck in the warning screen and wouldn't boot. i threw so many commands at inside fastboot mode, I am surprised it's not a paperweight. honestly, you name it, I sent it! wipe, format partition, didn't have a concern in the world, and I don't because I have a pixel 4a as the daily driver.
it should be noted, prior to this, I could never get LG Up to work as the app never recognized the phone. after fastboot mode not getting results booting into anything, I said f*ck it and put it into download mode. tiny bit of reading here and shortly after pulling the US996 20f KDZ file from LG, I had a stock RUNNING Oreo!
bro, seriously though, this Oreo runs the best that I've seen! it's smooth and fast! just a little on the heavy side. she's bloated and I need to trim the fat away. LG poisons the phone bad with all their garbage. runs like a champ though
I am extracting stock ls99720a Oreo from ls997 and will test it well before uploading it.