yashsingh1/xdaforums huggingface dataset:
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] Minions_Army:
Wipe data.. its must
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] prasanth1947:
Update

I have installed on my device over small EUI , clean falsh. ROM is smooth , all basic funcionality works perfect. I am not heavy user, using this as my daly driver.

But battery dain over night was nightmare. it was 52 % when I was going to sleep, morning it was 20%, do I need to wait for few more days to caliberate ? or any issue that can be fixed in furtther update.

My other concern is : My device is unrooted ( even checked with root checker now), but banking application says it is rooted device. I remember Pixelexperence can use financial applications right out of the box with out doing any magisk hide or any other actions.

Is there a way to skip this check for these apps ( I know it can be done from magisk, anything else with in this ROM) ??
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] RandomDelta:
Havoc OS Review by RandomDelta

I have installed this Rom and am really pleased to say that it supports dirty flashing. I dirty flashed it over Arrow OS and it picked up all the appropriate settings and booted properly.

Havoc OS as usual brings all sorts of customizations that you'll ever need and even more than you can imagine. The Rom seems slightly unstable as sometimes the phone hangs and makes the windows 10 default error sound. The lockscreen takes a second or two to load , so there is a slight delay in unlocking. Otherwise the rom is pretty good. There are quite a few bugs in Havoc OS settings (like colorfade not working and many more) and some OS bugs like when black theme is active , if you press and hold the spacebar in Gboard, The options are almost invisible. The bugs are not major.

Also, I would like to see an option to set any manually input color as theme accent color. Also, the power menu is not getting changed to theme color and is black and white, something that I would like to see being changed to black and theme color.

The battery life is terrible. Battery drops at a phenomenal rate while watching video or doing anything. Even while standby, the battery drops at a very high rate, unlike Arrow OS. Also, the battery percentage is not actively updated for battery level changes. It drops by 2-3 % at one go, instead of by one. Hoping to see these fixed in upcoming versions. I'll be using this Rom as a daily driver . Screen on time is about 3-4 hrs(mixed usage) compared to 6-7 hrs on Arrow OS. Also, for some reason CPU hotplugging option in Kernel adiutor is not present even on supported kernel. The battery level detection is way off. Simply rebooting the phone changes the battery percentage by as much as ±25%.

It even has three finger screen shot (The detection is a bit off and doesn't get detected or is often slow[It assumes I am trying to scroll and starts scrolling and then takes the screen shot so it's a bit finicky]) and gesture navigation! It's awesome. The smartbar navigation customizations are only working sometimes. And I am running into black screens quite frequently because the OS is a bit slow to load it.

The OS feels a bit laggy. Hope it gets snappier.

The battery capacity is showing as null mAh. Hope it gets fixed (screenshot attached).On activating After screen turns off settings (like drop to 2G and turn off GPS ) the phone takes a lot of time to wake up.

Hit the thanks button if my review Helped :)
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] xen2001:
I am confused. With all those listed deficiencies, the ROM is pretty good?

Soooo ... if LOS 15.1 doesn't have any of those "minor bugs", then it must mean that LOS is PERFECT!

And it is, indeed, thank you very much. :)
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] RandomDelta:
At the end of the day it is about what you end up with. Havoc Os pie has lots of customizations, which you won't find anywhere else. For some minor inconveniences, I don't wanna Miss out on functionality. If you prefer stability over features, LOS is the way to go. Btw, isn't LOS 15.1 Oreo?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] xen2001:
I am surprised you ask. But of course, it is Oreo....and your point might be....?:p

Oh, I see... not a bleeding edge? Form over content? Not enough adrenalin flow?:laugh:

Keep us up-to-date...pls. I wish you would use Havoc 9.0 four months from now. Okay, maybe three?:laugh:
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] RandomDelta:
Instead of mocking me and the devs, you should appreciate their hard work and time put into this. If reliability we're on the top of your list , why don't you just stick with the stock rom? The point of a custom OS is bringing more features to a device.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] RandomDelta:
Update:

For some reason CPU hot plugging support is disabled in Havoc OS and cannot be activated even with a custom Kernel. The Rom is poorly optimized. It's heating up the phone a lot. Maximum brightness and Volume is lower than stock. All The CPU cores are constantly being kept online, which is using a lot of battery during standby. I might have to go back to Arrow OS :( if these issues are not fixed soon.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] ssbbery:
Does this rom supports substratum theme coz i want to change the look of volte icon.it was possible in havoc oreo but finding it difficult to change in this havoc pie update. pls reply.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] ssbbery:
Perfect rom thanks dev..but few things missing from Havoc oreo like in livedisplay section the option to adjust colour,saturation and tint. It was the best settings which would make the display more vibrant. Request you to incorporate the same in next build
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] RandomDelta:
You can find the settings by installing kernel Adiutor under the screen option.

---------- Post added at 04:49 PM ---------- Previous post was at 04:48 PM ----------

I'm not really sure but the official description says that it does support Substratum
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] Dudeonyx:
Screen mirroring not working on version 2.7.

Screen goes blank and phone restarts.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] will1996:
This ROM is great for games. In the antutu benchmark it scored 92k. Compared to pixel experience and lineage os, it does very well. The pixel makes 61k and the lineage makes them 87k. Her bug is screen mirroring, that's what made me stop using it. Correcting this and the screen brightness is perfect.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] kalehrl:
Screen mirroring seems to be fixed in the latest LineageOS 16.0. See LineageOS thread.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] Ravi_sh594:
Great rom.. everything works like charms..thanks dev for your hard work to give this phone a new life..

One request: device is heating a lot even with normal use...any solution?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] hacker.hitesh:
yes, always use phone in AC
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] Ravi_sh594:
That's great...awesome..thanks for your advice..???
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] pravdim2@gmail.com:
SBS Dull Chanel

Implemented in firmware sbs dual channel.Thenks.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
Any Pie ROM camera always hang or black screen

After few week using this latest HAVOC OS 2.7 my love complain same issue as Arrow OS, PixelExperience that default & 3th party camera will not work for sometime & it will HANG or black screen & need force reboot to use it again !! So i think may be bootloader version of phone is NOT latest so can anybody give link to download latest to flash bootloader/Baseband to latest ?

Please look picture attached Baseband is it old not latest right ???
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] Ravi_sh594:
Even on stock battery is 3 and half hours..
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] RandomDelta:
Sd652 is a old chip. We are using slight overclock so that we get a smooth pie experience. If you'd rather have janky animations and lag but a cooler phone, by all means, reduce cpu core clocks and voltage in kernel adiutor.

---------- Post added at 02:46 PM ---------- Previous post was at 02:45 PM ----------

Checkout TruWhite Mod . It'll help with your battery woes

Link:https://xdaforums.com/le-2/themes/mod-kernel-adiutor-settings-overload-t3893510. It's based on Havoc Os and Overload Kernel. You'll get about 5-7hrs of Screen on time on moderate to light use.

If you care about having only the best battery life, you can check out Small Eui by aurel or LeITA Rom. They currently offer the best battery life among all roms out there for the Le 2

---------- Post added at 02:53 PM ---------- Previous post was at 02:46 PM ----------

It's a common issue. No fixes other than reboot is known. It only happens if you take pictures via 3rd party apps like Telegram or WhatsApp. You can use Google Camera by nullbytepl, it doesn't suffer from this issue, but if you by even mistake, take a photo in WhatsApp or other third-party apps whilst Gcam is installed, even Gcam will get affected and no longer work reliably. Keep that in mind.

---------- Post added at 02:58 PM ---------- Previous post was at 02:53 PM ----------

This ROM is actually not that great for games. Lineage is still the way to go for gamers. Although Antutu and geekbench scores are higher, Havoc Os aggressively throttles GPU clocks on overheating , which happens very easily, like within 15mins of gaming. Frame rates fall by as much as 65% and games become a stop motion picture. Overload kernel fixes the issue to some extent, but lineage is still the way to go for gaming. Havoc is really good in battery life for pie roms and quite stable for daily simple use like calling browsing and texting and that's why I prefer it.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
It's a common issue. No fixes other than reboot is known. It only happens if you take pictures via 3rd party apps like Telegram or WhatsApp. You can use Google Camera by nullbytepl, it doesn't suffer from this issue, but if you by even mistake, take a photo in WhatsApp or other third-party apps whilst Gcam is installed, even Gcam will get affected and no longer work reliably. Keep that in mind.

.[/QUOTE]

[MENTION=9694557]RandomDelta[/MENTION]

You mean even i flash below latest firmware update also useless to solve camera issues ??

https://drive.google.com/file/d/0B-aXZcG1BJ2fOWlhMzk0bERTOEU/view

https://drive.google.com/file/d/1yHx97FOAUTzIx3Fgl-tTAdXjxUcEw2Ed/view
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] RandomDelta:
I'm not sure about it. I'm on the latest firmware and I still have the issue.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] EL_BELLACO:
Same, im on lastest firmware to!
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] techyhk:
New Update is up. you Download from sf or update via ota.

Hit thanks & Donate if u like to.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] darkmen0:
Thank You so much for the Rom , it's too fast And Customizable . I really love this. And Thanks again for Adding August Security Patch. Nice Work Dev!!
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] osianthefirst:
Before flashing the August security patch ... MAKE SURE U REMOVE YOUR PIN OR SET UNLOCK WITH FINGER PRINT AFTER STARTUP. OR YOU WOULD BE LOCKED OUT OF YOUR PHONE!!
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] will1996:
Can someone who installed ROM (08-08) tell me if screen mirroring has been fixed? Sorry for bad English.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] JamBax:
I thought this was discussed in almost every pie rom thread, and it seems you were the last one to notice.

If you forgot to remove security before flashing, just remove some files while in TWRP, there is also some zip file that does this work, which can be flashed in TWRP.

So, in fact, nobody is locked out and also there is no need to use so much capital letters, thank you.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] Bhaboklang:
No it has not been fixed. Still the same like the previous version not much change.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] osianthefirst:
Please can you cc the zip?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] RandomDelta:
Anyone else facing this issue in updater?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
You've got the latest build :cool:
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] JamBax:
This script/zip is from [MENTION=983097]Aurel[/MENTION] if it helps, you might donate him a coffee...

Easily install it with TWRP.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] JamBax:
I hope you mean 'the latest' and not 'the last' :)
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
I hope too ;)
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] RandomDelta:
Current major issues with ROM

1. Updater doesn't work

2.Screen mirroring is broken

3. Camera stops working if used once in any app apart from stock camera app or gcam.

Also, they changed the Q style clock on lock screen . I liked the previous style better.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] Bhaboklang:
Camera and updater is working fine for me only screen mirroring is not working...

And also in the latest updated the phone gets heated up so much.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] Steveromingagain:
Bluetooth

Anyone know away to make Bluetooth ring on head set when call coming in. Thanks in advance for help.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] carlosslpmx:
Hi. I updated my neighbor's phone. He had since I installed the Rom that he didn't updated it, and when I did, it installed, but at the lock screen it asks me for the pattern. I put it and the screens goes completely black and it returns to lock screen. What do you suggest me do? I hope you could answer. Thanks.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] Blackcrown:
Known problem for all Roms, asked many times. Search XDA for lock screen fix.

Gesendet von meinem SM-T813 mit Tapatalk
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] alok_never_go:
Camera app not working properly.

Any solution.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] alok_never_go:
Here a screenshot of gcam
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
Reboot
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] alok_never_go:
I tried working fine but after some time same problem.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] osianthefirst:
Go to magisk manager and install advanced charging controller
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] Bhaboklang:
Okay thanks I'll try it out.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
how to solve camera issues?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
What kind of issue do you mean?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] mamamia888:
Just use GCam-6.2.030-Le2-V3.2-build75.apk and it works.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
i follow your method one by one with this rom & my love still complaining that default camera apps still DID NOT work even installed 3th party camera apps still same issues BUT just need reboot to solve it... But everytime need reboot just can use camera is so ANNOYING................... !! :rolleyes: :( Any good idea to fix ??

---------- Post added at 01:06 AM ---------- Previous post was at 01:05 AM ----------

where to download ? link please…

and install it as user apps or system apps ?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
Link for user app (.apk)

But it doesn't solve the camera issue when working inside a third-party application. But without messengers all cameras (stock, Gcam and 3rd party) work stable.

Sorry for missunderstanding, "my method" is not to solve the camera problem, but to install the firmware correctly. Any firmware version doesn't solve that issue.

There is (from 4pda) a trick without rebooting - to input in any terminal app (installed) commands (root rights needed):

su

stop qcamerasvr

start qcamerasvr

P.S. By the way, three camera apps (stock, footej and gcam) work fine (99/100) inside Telegram and WhatsApp on my Leeco Le2 x526 3/64gb. May be, the hardware of my camera is different from yours...? :confused:

Try this ROM, many users are very satisfied. Link.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
thanks BOB, will try your method soon and for your info phone is same with yours it's leeco le 2 x526 3gb+32gb rom so hardware of course the same...

---------- Post added at 04:16 PM ---------- Previous post was at 04:13 PM ----------

but any ideas solve camera issues⁇seems your current rom no issues can u share your method with me ?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
P.S. By the way, three camera apps (stock, footej and gcam) work fine (99/100) inside Telegram and WhatsApp on my Leeco Le2 x526 3/64gb. May be, the hardware of my camera is different from yours...? :confused:

.[/QUOTE]

[MENTION=8346160]bobdubrovsky[/MENTION] seem you said (99/100) firmware is work for camera can you share link to download ?? :confused:
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
[MENTION=8346160]bobdubrovsky[/MENTION] seem you said (99/100) firmware is work for camera can you share link to download ?? :confused:[/QUOTE]

I didn't say "firmware"... What do you mean? What link do you need?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
deleted

---------- Post added at 10:14 PM ---------- Previous post was at 10:02 PM ----------

I didn't say "firmware"... What do you mean? What link do you need?[/QUOTE]

Than what you mean (99/100) ?? :confused:
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
Stability is 99% from 100%

All camera apps work enough stable.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
oh i see & do you think thread method below can solve my camera issue ??

https://xdaforums.com/le-2/themes/v1-1-google-camera-6-1-013-port-le2-t3880934
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
V3.2 build 75 from this thread

I think you should reinstall the ROM clearly and issues will go out. I don't have these issues, so you shouldn’t have them either.

Dont install Magisk!
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] Bhaboklang:
Is there a way to increase the sound volume because in this ROM the sound is very low
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
[MENTION=8346160]bobdubrovsky[/MENTION] this gcam still DID NOT solve camera issues ! WTF ! why le s2 custom roms always same issues… WTF ! not like my xiaomi and Lenovo device custom roms will not have this issues…
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
clean install did you mean method below ?

1) FULLY Format internal storage that's mean format all in TWRP, sure will backup my data files before this

2) Put Havoc-OS-v2.7 ROM, latest Gapps, & magisk.zip v19.3 in internal storage

3) Do Full Wipe = System, data, cache , dalvik cache

4) flash install ROM

5) flash install Gapps

6) Wipe dalvik cache

7) reboot

8) do all login to google account

9) test camera & than test shoot few pictures

10) Than reboot to TWRP & install Magisk to get root access

11) reboot than camera issues will SOLVE ??

[MENTION=8346160]bobdubrovsky[/MENTION] correct me above if have wrong step or add in step if needed, Thank you Man... :cowboy:
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
a). Instead point 1):

1.1). Boot to twrp-tecovery. Install this version twrp. Reboot to Recovery.

1.2). Mount.

Checkmark all checkbox, excepting Usb. Select Storage - Internal.

1.3). Wipe.

Format Data - type yes, tap checkmark. Swipe. Reboot to Recovery.

b). After point 3):

Reboot to Recovery.

Repeat point 1.2)

Repeat point 3)

c). No need point 6).

d). Use gapps arm64-9.0-pico
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
nice Bob, for point 1.1 can i install TWRP via fastboot using PC ?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
:good:
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
I repeat written above:

You can try this ROM, many users are satisfied very much, all work like a charm. Link.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
Thanks again for suggest ROM but that rom is from Russia forum so i totally not understand what it need to install, so i prefer use all roms from friendly english in XDA :cool:
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
Nothing especial to install. 100% same as Havoc. Under link is very good mod of RR-P-7.0.2-20190813-s2. All languages are SUPPORTED. All camera apps are working fine. However, up to you ... :cool:
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
Hi Bob - It seem your step have to format Data internal storage 2 TIME so i do it one time only, & install TWRP via fastboot failed BUT install image via TWRP OK... Now i done flash/install ROM+gapps than take pictures than install Magisk done, will ask my love use it few day to see how, & HOPE camera issue can SOLVE......................

---------- Post added at 06:34 PM ---------- Previous post was at 06:33 PM ----------

is RR roms design more good look than Havoc OS ?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
Similar 90%

Havoc has maximal custom settings

RR - 10% less custom settings
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
OK Noted Bob
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] mamamia888:
Not sure RR can resolve your camera issue frankly, it could be related to hardware issue you have ... I don't have the same issue you have with this s2-specific GCam apk at all.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] lambha48:
Hello,sir I'm using cr droid 7.1.2 almost 1 yr and a half now on Le 2,but I need a fix in pubg mobile of course the game is smooth with resolution changer terminal emu.only issue is voice chat when turn on it start to lag like crazy when there's a lot of action,but voice chat off a lot smoother,how to fix thus
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] lambha48:
Sir,I tried experiment with that line,Enable down sampling for multi channel, actually original is 48 kHz and I edit as 20khz it improve abit in gameplay with voice chat on but not much ,please tell me how,is there a permanent fix,I want to make pubg smooth as when voice chat off,so I can talk with friends during the game,please help me.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
hi Bob, your fully format method still can't solve camera issues ! please look picture attached…

Hi All, anybody can advise me which rom or method can solve camera black screen issues ?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
what rom you are using ? which modem version you using ?

---------- Post added at 07:21 PM ---------- Previous post was at 07:17 PM ----------

According from my Love - Havoc ROM really is good rom with many features BUT camera random black screen still will appear.... :rolleyes:
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] mamamia888:
I tested Lineage 16 and Havoc, both are good enough for stability.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] coolkillermax:
what is current rom now?
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] mamamia888:
Havoc for now, might switch to LineageOS once it's official. Both are good for my existing device.
[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] bobdubrovsky:
you are doing something wrong. what exactly - I do not know ...

There are no fix, no method. Full format isn't solution for camera issue, it is just necessary operation for cotrect clean ROM installation.