yashsingh1/xdaforums huggingface dataset:
[G4 General] 48bloo:
Haha no biggie! I figured you still had some kind of control of your phone lol. Took it in for an exchange yesterday. The phone should be here by Tuesday, and cm12.1 should be on it by Tuesday night haha
[G4 General] Dyscalculic:
VZW

Still no word on how to check the anti rollback version for the big red VZW version?

Trying to catch up on how to check it so I can unroot my 10A, do the OTA to 13 and flash the pre-rooted image.
[G4 General] waylo:
No one has stepped up to answer the VZW question unfortunately.

For your purposes, though, it doesn't sound you are downgrading, just re-rooting and upgrading, so really this warning shouldn't have anything to do with your plan.
[G4 General] Dyscalculic:
To be clear, I am trying to unroot (not re-root) 11A and upgrade to 13B and then root to 13B. Just trying to be safe than sorry. I have an exact replica of my current 11A rooted phone that I can extract the unrooted 11A stock image from, and will then apply to my current phone.

Happy to share that image if if there is interest and anyone asks and points me to the right file host. I haven't seen many Verizon 11A untouched stock images in the G4 threads.

I am happy to be the guinea pig and test out the service codes to check the VZW antirollback versions but don't know where to start. I have tried the AT&T hidden menu codes, but nada. I'm going to try some hidden menu apps but don't think that's a recognized way to go.
[G4 General] waylo:
Oh yes I mistyped. Unroot, rather than reroot [emoji2]

You won't trip the anti rollback with your plan.
[G4 General] heathenasparagus:
I'm confused. this is my phone. Can I use the KDZ exploit?

https://www.dropbox.com/s/q5y7969kj2ntklo/2015-12-14 14.31.31.png

https://www.dropbox.com/s/ojeg8axoguxxuvn/2015-12-14 14.31.36.png
[G4 General] waylo:
Your 'secret menu' does not list the antirollback #. Not all versions do, so it is unknown. Where did you obtain the phone from? What carrier? The antirollback lock seems to be only on some US carriers.
[G4 General] heathenasparagus:
This is a European G4 bought in Israel.
[G4 General] liyafe1997:
have you tried to flash TOT files to recovery it ?
[G4 General] JamaicaNater:
So if try to flash v10c on my h815 V10-TWN-XX I will brick it?
[G4 General] channeledbymodem:
I think you are saying this would work?

I root and install twrp on h811 stock 10n.

I flash micro's 20i without updating the bootloader.

Later I can downgrade to micro's 10n as long as I have left the 10n bootloader in place all along?
[G4 General] waylo:
It's a bit unclear to be honest.

#1 - I don't know if the 10n bootstack is compatible with the MM system... it might give a security error if it is mismatched. That's not a huge deal, just flash back the older system. Or flash the newer bootstack.

I've been following some of the MM threads, and I don't know what happens if you try to flash the 10n bootstack on top of a 20i bootstack, but some users have reported flashing back to 10n (not always clear on the method they are using) without problems. Autoprime has called this v2 antirollback, which is the same version as the 10n bootstack. We're not downgrading if moving between 10n and 20i, just moving laterally, so it could be okay.

Some users MIGHT have used the LG tool to flash back to lollipop, and if this works, then that would mean you can flash the 10n bootstack back without consequence.
[G4 General] channeledbymodem:
Thank your for your thorough and *honest* answer :confused:

Would you agree then that there is no "sure" way to downgrade from marshmallow and that one should be very sure one wants to upgrade before doing so?

That said, I am about to configure a brand new G4 that will be coming to me on some version of LP. I'm inclined to stay with 10N since after KK every "upgrade" I've done has been painful, at least initially.

Would you venture an opinion as to whether marshamallow is worth it given the uncertainty of going back? I won't hold you to it :)

I don't use wifi for calls or tethering, don't think I really need doze and can take or leave google now on tap so I think I'll be good with 5.1.1.

Thanks again.
[G4 General] waylo:
Oh, looking specifically at the autoprime MM thread, he's amended the first post (maybe on 2/15) to say:

1. *AntiRollback / QFuse V2* Safe to downgrade to 10N only.

So it appears confirmed that one can freely switch between LP and MM, provided you flash both system + bootstack, without risk of bricking.

I personally have not upgraded to MM. The doze feature sounds nice, but I installed a double-capacity battery on my G4 so aside from making it look hideous (kind of like the leaked G5 photo with the 'camera' pack), I have no worries about battery life. I have also either never had the lagging issues, or have lower standards and don't think my G4 is laggy, so any speed 'improvements' don't excite me. Yeah, it's anathema on XDA to not want the newest and 'best,' but I'm not one to create headaches when I don't have any to begin with.
[G4 General] channeledbymodem:
When I asked the same question in another thread Micromod referred me to the "kdz restore" in the thread you reference.

So, just for the sake of clarity, if I want to downgrade from MM, I can do a kdz restore to 10N, because the kdz will contain both the system and the bootstack?

Then once I'm on 10N again, I would oem unlock, root and install twrp from scratch.

What are people using to flash kdz's on this phone. The last time I did this I used LG Flashtool but the world seems to have moved on :).

Confused about the difference between LG Bridge and LGUP.
[G4 General] kalki1:
so i ended up bricking my phone .. -_-

now it wont turn on now or anything . anyone know to fix it ?
[G4 General] sitonapanotis:
Im trying to root my h810, to my understanding this is only possible on LP but an ota was pushed without me confirming forcing me to upgrade to MM.

so now i have a stock OTA updated h810 that I would like to roll back to LP.

after typing in the dialer code I see that I am on anti-rollback version 2.

Unfortunately the tot method of rolling back is failing for me, although maybe its because my pc is windows 8.1.

Is it possible to flash a stock LP rom any other way?

Is it possible to flash a rooted LP rom while on stock OTA updated MM?

can anyone point me in the right direction if this is not the place for this question?
[G4 General] justanutt:
I was able to flash the LP kdz with the LGUP app.
[G4 General] sitonapanotis:
there is no kdz for for the h810 (AT&T) unfortunately for me

edit:

Scratch that LGUP worked fine with the at&t tot instead of a kdz. Thanks for the direction!
[G4 General] justanutt:
Glad I could help.
[G4 General] wuvio:
i downgrade to 10N LP from 20i MM with LGUP, everything works well. only took 7 min in total. i hope this help more people
[G4 General] stewie-droid:
Hi guys. on 811 from 20i to 10n it flashes but then phone gets stuck on t-mobile boot screen forever and wont' get past it. Any thoughts what's it going on with that.

I need to go back to LP for camera mod that does not work on MM.
[G4 General] raptorddd:
so if am in 20i i can safely go back to 10n KDZ.? and how would i update to MM 20i from 10N?
[G4 General] waylo:
Yes that is correct.

Then to go back to 20i, there are a number of ways, since this would be the normal update path. Ota if you are not rooted. Or flash a Mm kdz through lgup.
[G4 General] raptorddd:
thanks well. i have tmobile in mexico with telcel sim card..so i cant use OTA right,? can it be updated with lg pc suite.?

and no bootloader unlock just yet . for warranty.. ill have the bootloader locked till warranty is over.. dont want to risk it..

where could i find MM KDZ?
[G4 General] d00mz:
FYI, the AT&T H810 21Yy is on V3 of anti rollback

:(
[G4 General] raptorddd:
and so is the new TMOBILE 20o.. is antirollback v3.?? so this means i cant go back to LP 10N i have not used 20o am still on LP 10N but i wanted to try MM so i havent decide wich to download.. i was aiming for the 20i.. but with the new released version not sure wich one to download
[G4 General] MicroMod777:
Yep its antirollback! Once on 20o your on it for life! Its v3. Good thing LGUP has this warning.
[G4 General] waylo:
Yes, LGUP is far superior to LGFlash. LGflash would ignore the antirollback flag and brick your phone. :eek:

Edited OP to list the latest on 20o. Sorry guys/gals, I upgraded to a G5 so it's hard to keep up on these things personally.
[G4 General] cloud1250000:
Can I go "back" to lollipop?

My phone came with MM.
[G4 General] waylo:
Yes, antirollback 0 gives you free reign. Use LGUP with the corresponding KDZ.
[G4 General] Nom sokheng:
[IMG="s"]https://drive.google.com/file/d/0B1yLoToVUgA4NHoxMVQ1Z0h3M0k/view[/IMG]

Help me guy My devices LG G4 F500s when I try to downgrade to LL v11i i got bootloop and also can't enter factory reset mode Now I back to MM and my Anti roll back is 0 can I downgrade to v10h?
[G4 General] raptorddd:
i think if you are on 0 you can downgrade as its 0. as for bootloop maybe your phone got hit the infamous bootloop issue or ILAPO..
[G4 General] waylo:
Only some versions have the antirollback. In the US particularly.
[G4 General] raptorddd:
not sure seems only tmobile its only one to do.. i dont like that..
[G4 General] Nom sokheng:
Thank for replay Now I can downgrade my F500s to LP :D
[G4 General] ytbro00:
Just got my phone back from LG after 2 weeks from bootloop repair. Got stuck with H81021x antirollback v3. Can't downgrade anymore. Will there be any work around for this? Hate not having root.
[G4 General] raptorddd:
just make sure you can downgrade... and its safe no hard brick

---------- Post added at 08:01 AM ---------- Previous post was at 08:00 AM ----------

that sucks.. am glad i didnt flashed the V3 on mine.
[G4 General] Alek4620:
flashed from mm all the way down to 4.4.2kk, like an idiot and now the att d850 i have will cstay on for a minute and then randomly shut off for no reason. tried to flash the 10 tot fill three or four times but cant seem to get my self out of this bootloop after the phone boots. dosnt make any cents.
[G4 General] raptorddd:
its hard bricked. i thikn i saw a post someone claiming he revived the phone.. why not search.. so far i know for tmobile 20o and 2p are V3 20i and 10n are V2. not sure of rest never been one lower version then lollipop 10n.
[G4 General] dMonsta86:
I have the same problem. I have a LG G Vista (D631) from AT&T

The previous owner rooted the phone and and some important system file was mishandled.

No clue what was done, but the phone wont bypass setup. It errors out and the app restarts.

I finally got it working but it took like 6 hours of playing around with Quick Shortcut Maker to get it to finally get to normal.

Problem is, next time it is factory reset it will revert to its unusable state.

The phone has version 20H firmware, but the ONLY firmware available for this phone is 10B. Even the sites that sell the harder to get LG firmwares dont have anything newer.

LG Bridge says its not supported, LG PC Suite has no support for Lollipop (20H is lollipop), and LG Mobile Support Tool freezes on downloading firmware EVERY TIME. So i have to flash it manually.

Version Info doesnt show anything to do with anti rollback version.

imgur.com/a/yFEcz

Is there any other way to check the anti rollback version? Has anyone seen a D631 bricked from flashing? Has anyone seen any AT&T phones with anti-rollback?
[G4 General] waylo:
The only one to my knowledge who reports the antirollback version # for KDZ in phones without the secret menu listing is [MENTION=2684188]autoprime[/MENTION]

The method has not been publicly shared, as far as I know. He must be looking at someplace in the KDZ file to find it.

Maybe this post mention will let him examine your existing KDZ more.

If they haven't released the 20H KDZ though, you're probably out of luck. Can't examine something that isn't publicly available.
[G4 General] autoprime:
not exactly sure what the question is here... is it "can i flash 10b even though im on 10h?"

without samples of both 10b and 10h bootstacks there isnt much I can do. but you should be able to use LGUP to attempt to flash the 10b kdz/tot (whatever is available) and if the antirollback version is lower than what you're currently using it should tell you so and error out without flashing.
[G4 General] dMonsta86:
Yes pretty much. Can i flash a 10b over a 20h on a d631?

I havent seen anyone talking about where they killed their phone, and that is literally the only full firmware available for the phone. period. so i can guessing there is no anti rollback on it?

I cant flash it with Lg UP. It says it is an unknown model. Installed every DLL i could find, uninstalled them all and installed the DLL first then LGUP... then the other way around... and nothing recognizes it.

Also when i try to find the firmware using the IMEI it throws weird errors like Model check Fail or something like that.
[G4 General] autoprime:
try UPPERCUT? might work with your model to get LGUP going.

https://xdaforums.com/lg-g5/development/uppercut-lgup-loader-g5-variants-t3511295/
[G4 General] dMonsta86:
Tried it, not working. Still shows unknown model.

Also, i have the TOT file for 10B BUT if you look here this guy pretty much says that it will 9008 the device (10b is kitkat, 20h is lollipop)

Without LG Bridge, LGUP (to be safe) or a newer firmware, i think this phone is now worthless. The verizon version has all the newer KDZs public but ATNT no. Thanks ATNT!
[G4 General] Costa_Veloso:
Hello! I recently bought a LG G4 from the web. It was supposed to be H815 model. But at the version section it says H815V21y. AT&T only has V21y version. I looked at antirollback​ and it's v3. International model has v0.

So the seller sent me an international model but with AT&T software...I don't know why.

Could someone help me to install international software to my LG G4?

The software of my phone is LGH815AT-00-V21y-GLOBAL-COM-JUN-20-2016-ARB03

Thanks in advance!
[G4 General] waylo:
Once your software is set with a higher anti rollback, there's no way to flash anything with a lower one. If the international version of the software has never had a higher anti rollback, you're out of luck.

I'd attempt a refund since you are not getting an international version, if that's truly what you paid for.
[G4 General] dMonsta86:
Just to follow up, turns out you can downgrade the LG G Vista.

I flashed the 10B over the 20H and it works just fine.

Wont update though... better than nothing. :)
[G4 General] stewie-droid:
Hi guys. So i have 10n Rom running on h811 but antirollback v3 is causing me some problems. Any way to downgrade antirollback ?
[G4 General] waylo:
None that can easily be done.

Reportedly there is some hardware that can be purchased, by repair stores mostly, that can do this, but that's it.
[G4 General] aamszia:
I have Korean Variant F500L which is accidentally flashed to LS991 Anti ROLLBACK 4 .
[G4 General] rizkhan999:
H811 with a ROM having higher ARB version cannot be downgraded to a ROM with lower ARB version except through one way. Which involves:

1. Unlocking the bootloader ("fastboot oem unlock" works for H811).

2. Booting with TWRP ("fastboot boot <twrp_file_name>.img").

3. Transferring TWRP .img file to the Phones internal memory.

4. Wiping everything except internal storage, microsd and OTG.

5. Installing any H811 ROM ZIP like this one through TWRP.

6. Flashing TWRP .img in recovery through TWRP.

Although, this rom is also on ARB v3 but since TWRP is now installed, any ROM can be wiped and any ROM can be installed now.:)
[G4 General] waylo:
So what you are describing with TWRP does not circumvent the ARB issue at all.

As long as the custom ROM does not include an earlier ARB version bootloader, you are safe flashing that ROM. Most custom ROMs do not include a bootloader or modem partition.

However, if the bootloader and ROM are not from the same release, you risk having a bootloop/soft brick. LG puts in stupid checks like that.

If you manage to flash a bootloader.zip with a lower ARB through TWRP, you will hard brick, guaranteed. Many of the earlier version ARB bootloader.zips have been removed from the forum, for good reason.
[G4 General] rizkhan999:
Oh. You mean to say that flashing a bootloader/modem with a lower ARB version even through TWRP would still brick the phone!!! Well. LG has put real stupid checks then :rolleyes:
[G4 General] waylo:
Yes, it's quite an overly stringent penalty.

On Samsung, an attempt to bootloader flash an older version just won't work. On LG, you lose your phone!

Even worse, before LGUP, the earlier LG-made flash utility ALLOWED YOU TO FLASH AN OLDER KDZ, bricking your phone! At least now, LGUP will prevent you from doing that.
[G4 General] sperelli:
hi there

i flashed v29a modem+bootloader.

can i downgrade to v20p by flashing the m+bl related zip?

EDIT: yes, it can be done without issues.
[G4 General] waylo:
Glad it worked for you, thanks for sharing!

However, you best check the anti-rollback # next time before doing that. The .zip flashes give you NO protection from tripping the anti-rollback, which will make you very sad.

Also looks like you have an EU version? The ARB restrictions might not apply to all versions.
[G4 General] steadfasterX:
Yep.. ARB is not on every device and firmware. For details:

https://tinyurl.com/antirollg4
[G4 General] waylo:
Nice, super useful, thanks for that link, was unaware someone had put in the effort to get it all compiled.

(I don't have the G4 anymore so completely out of the loop).

EDIT: Looking through that thread, wow, major kudos for all your efforts.
[G4 General] metropical:
my H811 is 20x ARB 3. That means I can't go back past X or O?
[G4 General] waylo:
According to that thread referred to above, no. 20o or later only.
[G4 General] chris2288:
Hardware to downgrade

Do you know what the name of that hardware is
[Sony Xperia M4 Aqua] thgm21:
-overheating issues(you can literally cook eggs on the back of this phone)

-low gaming performance, games stutter a lot, some even run with less than 20FPS(just look at this - twice cheaper phone outperforming m4)

-low available usable storage(under 2GB)

-takes forever to charge(5 hours+ via USB)

-takes forever for the camera to focus

-no way to root it

-no way to unlock the bootloader(apparently now you can)

-overall feels very laggy, unresponsive and slow

+waterproof

+decent camera

If i have to make a conclusion i'd say its the most disappointing phone i ever bought and just suggest to people to avoid it.
[Sony Xperia M4 Aqua] AndyPhoenix9879:
Overheating issues? I get a max of 60 degree Celsius, not enough to cook

Gaming and performance issues - Yea.. Sony screwed up with

.99 update

Storage space - I got 3GB free lol. But yea, I feel you.

I can charge faster than 5hrs!

Camera focus is okayish, it outperformed my friend's Mi3 so I'm proud.

Root - Almost there I think

Bootloader - It's unlockable already.

The phone isn't that too bad, just the firmware that screwed the performance. Downgrade the phone and you should get a better experience.
[Sony Xperia M4 Aqua] pan1980:
I mostly agree with AndyPhoenix9879

Mine doens't seem to overheat that much even after hours of 3g web browsing ( i dont play games)

Performance is a issue with 2.99 thats why i flashed back 1.100

storage is a problem but after unistalling all bloatware and disabling anything else (that i dont need) i got 2.97GB free

Charging with a 1200mAh wall charger takes no more than 2 hours, if you charge only with computer usb 5 hours is ok, pc usb gives up to 500mah so a 2400mah battery needs 2400/500 almost 5 hours

camera is just ok

root, hope it comes soon and bootloader as AndyPhoenix9879 mentioned is unlocked already.
[Sony Xperia M4 Aqua] lordgamma:
Overheating is the biggest problem. Using camera make the phone hotter, capture picture is so slow. I'm on plan to buy a second phone while sony M4 let me down day by day. :(
[Sony Xperia M4 Aqua] Flamenawer:
The problem is not root. Camera with 54-100Mb/s is fast,I push button and no lag. Very good performance with firm.112 35400 in antutu. I play emulators ppsspp,reicast,mupen64 and my phone no is hot. Only when charge by USB and I do hotspot wifi and ftp server and play at same time because no power in USB to charge.
[Sony Xperia M4 Aqua] dushandiaz:
Is there anyway to get otg?

Like by using a powered Otg cable.

Xperia L got otg in a similar method.

.112 is the spanish generic firmware of m4 aqua.are you absolutely sure it doesn't overheat?

:)
[Sony Xperia M4 Aqua] Flamenawer:
Yes, I'm sure. If you want I can do any test. Only hot when charge by usb for many hours. My phone is UK without company, with 112.
[Sony Xperia M4 Aqua] FirstMn:
Im using newest firmware 2.99 and im not seen lags and times where phone got slow..

Overheating.. Max temp. 80*C, okay..

But bad game performance? No no no, WoTB max settings 30-50 fps, MC5 normally playable, GTA3 Normally playable.. Etc.
[Sony Xperia M4 Aqua] thgm21:
www.youtube.com/watch?v=tPD97FTcghE
[Sony Xperia M4 Aqua] neptun2:
The E4g have much lower resolution so it is absolutely not comparable performance.
[Sony Xperia M4 Aqua] thgm21:
25% less to be exact(1500 pixels versus 2000) and costs 50% less(130 euros versus 270) , why can't it be compared?

BTW: My phone seems to get around 29k on antutu on 64bit(just after factory reset), no idea how you are getting 35k.
[Sony Xperia M4 Aqua] Flamenawer:
Downgrade to spanish firm 112 from xperiafirm with flashtool. 35400 in antutu,you will have mass storage option again amera faster and no lag. Y play ppsspp at full speed with tekken soul calibour,shenmue in reicast...
[Sony Xperia M4 Aqua] donkeykongking:
I got this phone to replace my broken s4 for a period of time. I think most of my issues with it can be resolved once root is achieved and an optimized stock OS rom is made.
[Sony Xperia M4 Aqua] neptun2:
Well 540x960= 500 000 pixels (approximately) for E4G. For m4 aqua we have 1280x720 which is 921 000 pixels. Almost twice more pixels for M4 Aqua to process. About the antutu result - results around 35000 were achievable with first firmware (.112). With current one more than 30000 is really difficult.
[Sony Xperia M4 Aqua] EnricoLH:
They have two totally different prices. The Snapdragon 615 is an oven, and the only thing they should REALLY improve is the focus speed and video quality.
[Sony Xperia M4 Aqua] Renzy1973:
Hubby brought a couple of these home last night to replace our seriously outdated phones (his was a blackberry that he ruined dropping it into a river, mine is a trusty old Optimus LG One that is still ticking but showing it's age). What I have seen so far

1 - came with 16gb and had 9 free so not too bad there, can upgrade with a card to an extra 128...should do me for a bit

2 - yes it gets quite warm during constant use but not unbearable, cools quickly

3- my wireless router is dieing (sigh..I loved my old DLink DR615!!!)

4 - holy freaking updates! holy bunch of crap bloatware!

5 - no pre-installed games? With all that bloatware you think they would at least have solitaire or something to kill time while updating everything

6 - camera...meh it's a phone, not a high end picture taking device but does fine to capture those spur of the moment happenings, haven't tested video yet

7 - like the display - netflix, crackle, etc all play clearly, very watchable

8. love lollipop plus the Sony overlay - they have incorporated some of the key features I used to have to download seperate apps for like silencing the whole phone with one click, move to sd, flashlight, etc... little things but it makes the overall experience nice.

9 - sound quality is decent for a midrange phone, call quality is great

10 - it's soo much bigger than any other phone I have had! First phone I had that didn't fit in my jean jacket pocket! that could cause some issues as I am very forgetful LOL

In all, no major complaints... once I get my internet connection woes sorted with the router I'll be able to download my larger games and see how it does there. For now I got Frozen Bubble installed so that will tide me over :)