yashsingh1/xdaforums huggingface dataset:
[OnePlus X General] nixnix33:
Since my official oneplus x recovery doesn't have an option to create backup to external sd card: is it mandatory to backup all my personal data when rooting the phone?

I understand the risks if something goes wrong through the procedure (and then it's really pays to have a backup), but... will all the data and my settings of the original OxygenOS all be gone even if I succeed in rooting? Thanks a lot!
[OnePlus X General] ze7zez:
Unlocking the bootloader will cause a factory reset. So you must backup everything you think is necessary beforehand.

Read it carefully:

[GUIDE] How to * Unlock * Flash TWRP * Root * OnePlus X [Including Oxygen 3.1.3]
[OnePlus X General] nixnix33:
Thanks, mate!

However, since my original oneplus recovery doesn't support a "backup system to sd" option: can I first flash TWRP without creating a backup and then make one with TWRP - am I right?

EDIT: I see now that installing TWRP is not possible before unlocking the bootloader, correct? How to make a backup then, because the installed recovery does not have an option to make it...
[OnePlus X General] ze7zez:
[GUIDE] Full Phone Backup without Unlock or Root

[GUIDE] Full Phone Backup without Unlock or Root
[OnePlus X General] nixnix33:
Thanks, was just doing a backup with Helium, but it's worth to make a duplicate backup just in case...
[X Style (Pure) Q&A, Help & Troubleshooting] BooBzi:
Hello!

I am wondering if there is a way to let big cores go offline?

I tried Kernel Auditor,EX Kernel applications, there is an option to switch "minimum big cores online" option to zero, so it turns off big cores and uses them when needed, but after some seconds device just turns on all to stock, so 1 big core is always online. Maybe someone has managed to make so, that big cores are offline, and goes on when needed?
[X Style (Pure) Q&A, Help & Troubleshooting] ismithx:
the stock kernel doesn't really turn off cores. try installing frankenkernel, it can actually turn off cores and is very battery efficient
[X Style (Pure) Q&A, Help & Troubleshooting] BooBzi:
I was trying that long time ago, but no success, after some time all settings just get back. But will try it to be sure, maybe kernel managing apps has some updates in this field.
[X Style (Pure) Q&A, Help & Troubleshooting] ismithx:
You needed to check the CPU hotplug page of kernel adiutor and set the maximum cores online. This may not work on stock kernel though...
[X Style (Pure) Q&A, Help & Troubleshooting] BooBzi:
Thanks, for now it is working fine.

As I wanted:

4 LITTLE cores are always on;

0 BIG cores are always on - > they goes on when needed.

View attachment 4033549
[Huawei P9 Questions & Answers] grantstmatt:
Did someone notice after upgrading to nougat, if you watch video on YouTube there's a thin lines all over the video, or is it just me? Thanks!
[Huawei P9 Questions & Answers] mockrocker:
The same issue existed way back since nougat beta.. Thought it'll get fixed with the official nougat.
[Huawei P9 Questions & Answers] mokhledr:
yea it do sometimes, not all the time am wondering too whats it
[Fire TV Q&A, Help & Troubleshooting] tehmatix:
Hi,

It is a chance to have another wifi connection with TL-WN722n on Amazon Fire Tv box 2 (4K )?

What I want to say : to disable internal wi-fi , and connect this usb dongle on USB port , and connect to my router.

Thanks
[Fire TV Q&A, Help & Troubleshooting] Sean89us:
I really doubt it. Why would you want to?
[Android Q&A, Help & Troubleshooting] SAM209:
A couple months ago my battery started behaving strangely. Taking much longer than before to charge, showing the wrong percentage (showing 80% and dying out after an hour), going from 70% to 55% the second I plug the charger in, only lasting a couple hours even when charged to 100% (compared to a whole day when things were normal), etc..

So I finally replaced the battery but everything is still exactly the same. I've tried clearing caches, letting the battery reach 0% then charging it all the way to 100%, etc... without any luck.

Any idea what could be causing this?
[Tasker Tips & Tricks] SduosGt7562:
My network provider turn off Data connectivity every 40 minutes..so i need to turn off data+turn on data everytime during download...that means if i didn't check my phone..download will pause..,until i restart data

So in Tasker...how do i disable data and enable it ...after every 30 minutes automatically
[Tasker Tips & Tricks] GrippingSphere:
Create a Profile using time clock as the trigger to turn Off your mobile data then On again after a few seconds.
[Tasker Tips & Tricks] SduosGt7562:
I use the time clock from 12 am to 12 pm.Then i set turn data off ...and then turn data on...how to set variable to 10seconds...i dont know that...in notification... no active profiles is shown
[Tasker Tips & Tricks] alienyd:
what happens when you lose connection? disconnected? or just no more data gets download?

if the data speed drops, you can try to watch this and have Tasker re connecting when that happens

if you are disconnected, use that as trigger.

I would prefer this over time schedule.
[Tasker Tips & Tricks] GrippingSphere:
You can try creating a Task to turn-on mobile data that will be triggered by the opening of an application (i.e. your browser or your download app). Within this Task there's a 30 min or so delay to turn-off your mobile data then On again after 10 sec or so. Create a loop to repeat this process until you close your app.

If you're not yet familiar with creating Tasks and Profiles., I suggest you learn first from examples in YouTube. There are many tutorials on YouTube about Tasker.
[Tasker Tips & Tricks] SduosGt7562:
when i lose connection..data doesnt actually turn off....instead speed reduced to 0..ie no upload or download arrows shown
[Tasker Tips & Tricks] SduosGt7562:
my speed drops to 0.help me make a profile pls
[Tasker Tips & Tricks] alienyd:
sorry, my bad, it turns out the speed monitoring is more complicating than I expect.

maybe you can try this:

every x minute, do a http get of some simple page, than check for its %HTTPR, if this equals -1 then your connection is down.

I don't know how your connecting works, so I can't help you there.
[Nexus One Android Development] there_are_four_lights:
Hi all,

Lineage OS has been ported to Sansumg Galaxy S i9000

https://www.xda-developers.com/xda-...ported-to-the-ancient-samsung-galaxy-s-i9000/

Can anyone attempt to port for the N1?
[Nexus One Android Development] kazander18:
I would also like to see this ported over. Would be great to have the original Nexus sporting Nougat.
[Nexus One Android Development] J0SH1X:
Bah dirty ports are ugly and devices don't share any hardware I will do a source compiled rom maybe aokp rather then lineage

Gesendet von meinem LG-H815 mit Tapatalk

---------- Post added at 10:06 AM ---------- Previous post was at 10:00 AM ----------

The main question is can I make the system fit to 220 MB

Gesendet von meinem LG-H815 mit Tapatalk
[Nexus One Android Development] J0SH1X:
Gesendet von meinem LG-H815 mit Tapatalk

---------- Post added at 04:15 PM ---------- Previous post was at 03:42 PM ----------

ninja: error: '/home/j0sh1x/lin/out/target/product/passion/obj/lib/libcamera.so.toc', needed by '/home/j0sh1x/lin/out/target/product/passion/obj/SHARED_LIBRARIES/camera.qsd8k_intermediates/LINKED/camera.qsd8k.so', missing and no known rule to make it

hmmmm
[Nexus One Android Development] there_are_four_lights:
J0SH1X you are awesome, keep us updated :)
[Nexus One Android Development] vewa52:
Yessss....just what I wanted.
[Nexus One Android Development] J0SH1X:
progress is it builds to 72% then it breaks because of stlport or something like that i will try to use 4.4.4 stlport maybe that will change something

and cam wont work in initial build need to overwork the complete device tree since its outdated as **** (like from 4.2)
[Nexus One Android Development] J0SH1X:
Okay quick update again fixed some errors in framework now i need to fix sepolicy maybe i can Use the one Form desire or hd2

Gesendet von meinem LG-H815 mit Tapatalk
[Nexus One Android Development] J0SH1X:
Sepolicy seems to be fixed need to overwork framework since system isn't big enough maybe I will do it like on Bravo and move system to sd-ext and data to sd-ext2

Gesendet von meinem LG-H815 mit Tapatalk

---------- Post added at 08:22 AM ---------- Previous post was at 08:22 AM ----------

Fstab*

Gesendet von meinem LG-H815 mit Tapatalk

---------- Post added at 08:30 AM ---------- Previous post was at 08:22 AM ----------

And I will switch to Bravo kernel sources since they are the same device hopefully Bravo hboot will work on nexus 1 as well else I have to do my own hboot

Gesendet von meinem LG-H815 mit Tapatalk
[Nexus One Android Development] vewa52:
Thats awesome J0SH1X!!!
[Nexus One Android Development] J0SH1X:
Even through I need to do twrp 3.0 or at least 2.8

Gesendet von meinem LG-H815 mit Tapatalk
[Nexus One Android Development] vewa52:
Can you add trackball wake in the initial build?
[Nexus One Android Development] J0SH1X:
idk if this will even work :p :eek:

fixed some kernel stuff that prevented to build and moved syste partition to 4ext sd card i need someone to test if htc desire hboots will work on passion.
[Nexus One Android Development] vewa52:
What is the hboot you need? I can try in Blackrose. System cache data in that order.
[Nexus One Android Development] J0SH1X:
Currently nothing i have issues with the file system build completes but it fails packing userdata because it's not a ext4 file system need to ask macs18max about it or spezi

Gesendet von meinem LG-H815 mit Tapatalk
[Nexus One Android Development] kazander18:
Great work Josh, looking forward to your progress!
[Nexus One Android Development] J0SH1X:
Hmm Macs and Spezi don't answer to my question maybe I have to use build_image.py from kitkat

Gesendet von meinem LG-H815 mit Tapatalk

---------- Post added at 01:32 PM ---------- Previous post was at 01:30 PM ----------

[MENTION=2473151]macs18max[/MENTION] any idea it tells something about fs type is not ext4 nexus one used to use yaffs2 but I changed it in Fstab

Gesendet von meinem LG-H815 mit Tapatalk

---------- Post added at 01:36 PM ---------- Previous post was at 01:32 PM ----------

I think I just found the solution need to compare it to Spezi Bravo sources brb

Gesendet von meinem LG-H815 mit Tapatalk

---------- Post added at 01:38 PM ---------- Previous post was at 01:36 PM ----------

Yeah i think the solution is that I need to change paths and fs type in init.rc too

Gesendet von meinem LG-H815 mit Tapatalk
[Nexus One Android Development] J0SH1X:
There is the issue need to do it like on Bravo to get system partition moved to sd-ext

View attachment 4073036

Gesendet von meinem LG-H815 mit Tapatalk
[Nexus One Android Development] J0SH1X:
And I maybe found a solution for camera

Gesendet von meinem LG-H815 mit Tapatalk
[Nexus One Android Development] macs18max:
Gr8
[Tilt, TyTN II, MDA Vario III Windows Mobile ROM De] unk3:
I just bought a tilt TODAY, and i already flashed it to the dutty's dual touch v1.1 rom. My question is does this phone support a full version of AOL INSTANT MESSENGER? If so, how can i get it?
[Tilt, TyTN II, MDA Vario III Windows Mobile ROM De] mutantblack:
ok. my first answer is using the SEARCH function. Now the real answer is I am using IM+. It has aim, yahoo, google talk, msn everything in one. Using it and liking it.
[Tilt, TyTN II, MDA Vario III Windows Mobile ROM De] unk3:
i looked up aim and nothing came up, but thanks for your response :P
[LG G5 Guides, News, & Discussion] viral316:
Here are the links to join this group

Whatsapp Group Link

https://chat.whatsapp.com/HZdQVOdSD3v6u6m6JClYd4

Telegram Group Link

https://t.me/joinchat/AAAAAAyqu2f1mWHzPAmluQ

There is already a thread for that but i think it was closed so i created new.
[LG G5 Guides, News, & Discussion] akki7636:
I was an Samsung s6 user... For s6 there were many whats app and telegram groups for support and discussion. I hope max. No of users join this group so that we can have healthy discussion and development.
[Xiaomi Mi 5 Questions & Answers] le_sioux:
Hi,

I'am not able to use AudioFx with Deezer on LineageOS. The app doesn't work.

Any idea ?
[Xiaomi Mi 5 Questions & Answers] vladimir_carlan:
Spotify is not working neither. AudioFX is broken since ages ago.
[Xiaomi Mi 5 Questions & Answers] le_sioux:
Ok. Do you have an good app to remplace it?
[Huawei MediaPad, T-Mobile SpringBoard] bunleng638:
My phone flash wrong recovery now can't extract from update.app recovery.img so haven't recovery to install stockrom please help me
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] moluntic:
POST NO.1 : Some Basic Information

POST NO.2 : Download And Changelog

POST NO.3 : Add-ones

#Disclaimer

#Supported devices

Galaxy J7 H/F/M models That Upgraded To MM

#Unsupported devices

Everything else from supported devices

#Whats New About Rom

#FAQ

Q : Which recovery should I use?

A : TWRP will work.

Q : How to flash ?

A : do a Full wipe Then flash the rom

Q : How About Flashing V(x) On V(y)??

A : Not Recommended

## If u Have More Question Try To Comment , I cant Answer all Pm in PV , Thanks

#Video Of Rom

Click Here

Thanks To [MENTION=7618083]furkhan67[/MENTION]

HIT THE THANKS BUTTON EITHER U LIKE IT OR NOT:laugh:

#Credits To

Me Actually:D (@Moluntic)

@Allooosh98 For Helps , Guides , Edge Screen , Native Blur , ....

@maxx35000 For Helps , Guides , Fixes , His Awsome New Features , ....

@Gayos24 For Helps , Guides , ....

@edzamber For Helps , Guides , Fixes , ....

@malbert16442 For His Awsome Guide For Porting Samsung Roms

@SuperR For His Awsome Kitchen

Samsung For Releasing This Awsome Rom In 32bit Version

#Latest Version Information

Status: Stable

Created 2017/Feb/9

Last Updated 2017/Mar/4
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] moluntic:
#Downloads

v1 : Click Here

v1.1 : Click Here

v1.2 : Click Here

For Ease of use :

wipe device (twrp - wipe - advanced menu (check everything except sd card and usb, internal memory is optional) or u can use wipe options in aroma)

copy rom and add-ones u want to an storage

flash rom , do not reboot, flash add-ones , then rebbot and enjoy the rom

#Changelog And Information

V1

Based Region: Russia(SER / SVZ / ...)

PDA : A320FXXU1APLD

F.Ware Released Date: 2016/Dec/28

ROM OS Version: 6.0.x Marshmallow

ROM Kernel: Linux 3.10.x

Based On: Edited Stock Firmware (Enforcing)

And V1 Has No Changing Log Becuase Its 1st Version

Look Into First Post

Bugs :

AOD (Always On Display)

BLF (Blue Light Filter)

Screen Mirroring

Volte

Sound Alive (UHQ)

V1.1

Based Region: Russia(SER / SVZ / ...)

PDA : A320FXXU1APLD

F.Ware Released Date: 2016/Dec/28

ROM OS Version: 6.0.x Marshmallow

ROM Kernel: Linux 3.10.x

Based On: Edited Stock Firmware (Permissive)

Screen Mirroring Fixed And Works Great

Beacon App Fixed (Now Available Devices Will Be Shown On Pulldown Menu)

Sound Alive Fixed (UHQ)

New CSC Files From A7 2017 (Not A Big Change, Just More Compatibility)

Init.d Tweaks For Better Battery , Performance , Net Speed , . . . .

Stock Kernel Modified For Init.d

New Kernel Added To Setup (AfterBurner, Special Thanks To @daishi4u)

Root/Unroot Opthion On Setup

Some Apps Updated To Latest Version

Some Nougat Apps Added :

Systemui Nougat Themed

S Browser

Game Launcher

Calculator

SFinder

SVoice

Nougat Sounds Added

Useless Features (Like AOD And BLF) Removed From Rom (Setting , Tiles , ...)

Security Patch Updated From A7 2017

Bugs :

Volte

Lock Screen Keygaurd

Keyboard

V1.2

Based Region: Russia(SER / SVZ / ...)

PDA : A320FXXU1APLD

F.Ware Released Date: 2016/Dec/28

ROM OS Version: 6.0.x Marshmallow

ROM Kernel: Linux 3.10.x

Based On: Edited Stock Firmware (Permissive)

Lock screen keyguard fixed

keyboard issue fixed

systemui rethemed to nougat

framework too

Lots of Csc features Add (discovery by urself)

multiuser added

and Erc

(I releases v1.2 fast cuase of cirtical bugs on v1.1) enjoy

Bugs :

Volte
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] moluntic:
#Add Ones

Edge Screen

Click Here To Download

Install Guide : Flash Zip via TWRP

TW Blury Launcher

Click Here To Download

Install Guide : Flash Zip via TWRP

Viper Sound Mod

Click Here To Download

Install Guide : Flash Zip via TWRP (It Seems It works on Stock Kernel , Tested By Myself)

CarMod

Click Here To Download

Install Guide : Flash Zip via TWRP

Screen Off Music Control

Its Not And Additional Add-one But It Still Undiscovered by many users

In Grace UX Samsung added Screen Off music control just like Aod (its not Aod)

for using it first Go To Music App -> Settings -> Enable Screen Off Music

Then Lock ur Phone (Screen should be Off)

and Then Connect Ur Handsfree To Phon

See Magic

AfterBurner Kernel

Click Here To Download

Install Guide : Flash Zip via TWRP (Do Not Forget To Thanks There)

Thanks To @daishi4u

Optimax Kernel

Click Here To Download

Install Guide : Flash Zip via TWRP (Do Not Forget To Thanks There)

Thanks To @Pavan l
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] moluntic:
reserved again
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] elhugo3:
Waiting , thanks

Enviado desde mi SM-G935F mediante Tapatalk
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] Oves786:
Bro please this rom for j710fn j7 2016 too
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] talk2indrajit:
Fingers crossed, hope will get it for J007f as well :)
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] menmaster:
fixed

thank you

great rom
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] talk2indrajit:
Bro is it possible to add Native blur ???
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] Xda winner 2014:
Cant wait to see it :3
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] joaonds:
Reserved to thanks.
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] parth111999:
Native Blur already Added;)
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] talk2indrajit:
Bro waiting eagerly, plz upload the ROM [emoji106]
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] parth111999:
Soon The Roms Gonna Get Uploaded......:p
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] prashantp01:
Moluntic is back guys..................Now J7 will be beast..........All the best bro..........waiting for a3?
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] Harvey_Spectar:
Awesome bro

I know all the stuff

I can make the thread for u??
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] talk2indrajit:
Tic Toc Tic Toc...waitng for it ;)

Bro, please enable VoLTE for this ROM :)
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] parth111999:
:laugh:Let it Release..Hehehe :laugh:
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] Sergej2014:
waiting for rom
[Samsung Galaxy J7 ROMs, Kernels, Recoveries, & Oth] simar286:
Plss Upload the Rom Brother :o
[Android Apps and Games] renavito4:
Hello Friends, this is my new Android Game please try it and give your valuable feedback.

Hangman - Android Apps on Google Play

Images
[Android Apps and Games] renavito4:
hey Does anyone have a try?
[Miscellaneous Android Development] joker.lg:
It says root super su is not void warranty

I read it on google it says with 6.0 chainfire root dont need to rewrite system if you root ur phone u can easyly remove with reset. Is that true????
[Lenovo A328 Questions & Answers] yousefhesham1235:
i had install ios 8 rom to my lenovo a328 and the first day the phone work ordinary and next day the phone say unfortunatly.android.systemUI has stopped i try to reboot to recovery with ( power button and vol up ) and adb but it didn't reboot to recovery

what should i do ? :(

thanks
[Lenovo A328 Questions & Answers] realpits:
try volume down+power its worked on the same trash here....
[Honor 5X Questions & Answers] bkwas:
Running Resurrection Remix on this phone RAM amount showing 1808 MB in about phone

It supposed to have 2 gigabytes wondering why the full 2 gigabytes are not available.
[Honor 5X Questions & Answers] ShadySquirrel:
RAM is shared betwen system and GPU. Like on integrated desktop solutions, like AMD APUs.
[Honor 5X Questions & Answers] jkccl9:
background services and the phone takes up ram, you cant clear it
[Honor 5X Questions & Answers] hemanth.k:
by default it's the same everywhere
[Honor 5X Questions & Answers] adriansticoid:
All memories are like that. Check your SD. It's not exact too. The reason is because it is counted base 2 rather than base 10.
[Honor 5X Questions & Answers] Soapy!:
It's actually rounded. Selling point goes like this, it's better to say 2 GB of RAM that. 1.8 GB.
[HTC One A9] ghasemi.hussein:
I have HTC one a9 with build number 1.58.709.1. Rooted and unlocked bootload and have twrp. Never flash any roms.

I want to remove every thing that prevent ota to be installed.

I think twrp will cause problem for ota. So how can I remove it an have stock recovery?

The ruu is not available for x.xxx.709.x in web. But I find ota matching my build number. Is that help?
[HTC One A9] CSnowRules:
Yes, you can extract the recovery.img using this tool.
[HTC One A9] ghasemi.hussein:
Thanks.

I will do that. Then what should I do with it? Flash it?

And I remember that after installing twrp I had format my internal storage to make it decrypted. How can I undo that?
[HTC One A9] CSnowRules:
Yes, you can flash the extracted recovery image via recovery.

For encryption, if you do the OTA update and let it reboot stock, it will automatically encrypt your data. Obviously, first boot might take a long time. If you interrupt it, you will lose your data.
[HTC One A9] ghasemi.hussein:
After restoring stock recovery, I need to unroot and lock boot loader for getting ota?
[HTC One A9] CSnowRules:
To manually install an OTA, definitely not. All you need is the stock recovery, a COMPLETELY untouched system (never mounted r/w), and the correct ota.zip.
[HTC One A9] ghasemi.hussein:
Is there a way to check if system modified or not?

I read before that some ota are patches asn some of them are complete os. They said only when you want to install patches you need untouched system partition.

The next ota will be android 7. So it format every partitions and modified system cannot make any problem.

Is it correct?
[HTC One A9] CSnowRules:
No, the Nougat OTA (for US unlocked at least) patched the existing system partition.

The easiest way to check is to attempt to install the OTA with the stock recovery. It will tell you.

If I were you, I'd flash stock recovery and system from your current RUU, then OTA update.

Another option is to just install the RUU. That will revert your phone to completely stock, wipe your data, and allow you to start fresh.
[HTC One A9] ghasemi.hussein:
That's the problem. There is no ruu available for my build number (1.58.709.1.). I just find an ota with this bluid number. The ota did not contain a system.img.
[HTC One A9] CSnowRules:
Did you flash the stock recovery and attempt to install the OTA?

If so, what is the result?
[HTC One A9] ghasemi.hussein:
Yes. I flash stock recovery. then I try to side load the ota to phone. Adb did not recognize device in boot loader or recovery. I don't know why. I use 15 sec Adb installer. It said it installs drivers.

Update: I notice that in bootloader on top of screen there is writing: "software status: official".

Does that mean system partition is untouched?
[HTC One A9] CSnowRules:
If your stock recovery has a menu, you can copy the OTA.zip to your phone or sdcard and install from there.
[HTC One A9] ghasemi.hussein:
It said system partition has mounted r/w.

What can I do now? There is no ruu with my build number in web. I think s-off is my only way to get android 7? Or maybe htc publish ruu for all regions this time?

If I found system partition backup of my build number in web, is restoring it help?

update:if previous ota (1.56.709.70) has system image in it can i flash that sysem.img?

and do i have to install twrp again to be able to flash system.img?