Database Users

Unlock Bootloader

Dear
i have htc tattoo with original rom. Now i want to install the custom rom.
Some Questions:.....................
It is necessary to unlock the bootloader before install the custom rom.
I cannot see the bootloader option under fastboot( i update the hboot version)
Is there is a tools that unlock the bootloader
I trying to install the custom rom many days before but useless. i recover many errors but this error(I cannot see the bootloader option under fastboot) is not going.
pls help

No need to unlock bootloader, just root install CWM and flash on
http://wiki.cyanogenmod.com/wiki/HTC_Tattoo:_Full_Update_Guide
use this guide to do it

thanks
if problem faced i contact again.
thanks again

Question: Asus ZE551ML correct procedure : root + recovery + custom room + (bootloade

Good Morning,
I'n a new signed member in this forum and i want to thank you for the job you've made to open this community. It's very helpful for the android modding.
However i have some doubts regarding the procedure to follow to make a complete customization of my Asus Zenfone 2 ZE551ML. My intention was to root it, but once i saw some of your Custom Rom i'm going to try to flash one of them on my smartphone. I have already read the theads of the FAQ but i haven't found nothing regarding the correct procedure. My intention is to root the phone and then install the custom Rom. I have seen that the boobtloader unlocked and the flashing of the TWRP are required, but i haven't understood the correct sequential operation to to all these tasks. I'll be very thankful if someone would help me and suggest me the procedures thru the links in the forums.
In past i have rooted my old Samsung S2 and flashed a custom rom but i have never touched the bootloader(?) or installed a custom recovery.

I did it by this order:
1.Root
2.Unlock Bootloader (Unofficial)
3.TWRP
4.Flash Custom Rom

HugoClaw said:
I did it by this order:
1.Root
2.Unlock Bootloader (Unofficial)
3.TWRP
4.Flash Custom Rom
Click to expand...
Click to collapse
Thanks, only a further question..
To root i'll follow the method two in this guide http://forum.xda-developers.com/zenfone2/general/root-newbie-root-instructions-zenfone-2-t3114063
to unlock the bootloader this guide:
http://forum.xda-developers.com/zenfone2/general/congrats-to-bootlocker-unlocked-t3138547
to install the TWRP this guide:
http://forum.xda-developers.com/zenfone2/development/z00az008-zenfone-2-t3265236
but in this case i don't know if i have to download the TWRP LP or MM version, in fact my device currently is running lollipop, but i want to install a custom rom (RR) which is running Marshmallow. Which one i should choose? and in this thread, there is no guide to install the recovery but there are only the download links, could you suggest me where to find how to do it? ..
Then i'd like to flash the RR custom rom following this guide: http://forum.xda-developers.com/zenfone2/development/rom-resurrection-remix-mm-5-6-0-t3275854
So this is what i'm going to operate, is it correct?

Yes, this is correct. It doesn't mater what version of TWRP you use. Either works, and both can flash either LP or MM.

If you don't care about OTA:
Unlock bootloader with official apk
Flash twrp with "fastboot flash recovery twrp.img"
Flash custom rom

[Guide][How to]Update Bootloader/Firmware to OOS3/H2OS2 w/o installing OOS/H2OS

Okay guys first let me tell you why I have created a new thread just for updating the BL and Firmware ,
I know we already have methods of updating like:
1. flashing the full OOS3 zip through stock recovery ,this method is quite simple for the ones who are on stock recovery and just want to update their OOS version.If you fall in this category then you have no purpose here,you may leave.
2. Is method provided by our fav helping hand @Joshwin Aranha ,that method is sure for the rest of us who dont fall in the above category,but is way too long,although simple and effective still "long".
I created this thread to help the CM13(Official or Sultan's)//any custom rom using new BL,users who want to update their BL without flashing the OOS through the tedious way just to update BL and users who are stuck on bootlogo due to old BL with roms using new BL.
Here I will guide you through the required steps to update our bootloader "In easiest and fastest way without wiping and restoring anything".
So what are we waiting for ,lets start .
Prerequisites
you will need two files for this process,nothing else.
1 . First one is BLUpdater zip --->Here.
2. Second is TWRP compiled from latest sources use either This or the one from Here<--use v41 or use Sultan's from Here OR if you are Martin's fan like me and want to use his MutiRom TWRP goHere.
PS:I am assuming you have Unlocked Bootloader and have either
official/blu_spark/sultan's/ Multirom TWRP installed,in a working condition on OOS2.x BL(if not what are you doing here).
Note: make sure oem unlocking is checked in developer options in your current rom,else updating the BL may cause it to get locked ,and you will have to unlock it again and flash the recovery manually through fastboot itself.
Now the steps
1.First copy both of the above files in your sdcard or otg or ext-sdcard,any place accessible in recovery.
2. Now boot into recovery Choose Install and choose the "OPXBLUpdateOOS3.1" zip and flash it.
3. Don't reboot now ,go to Install again ,this time use "Install Image" button in lower right corner,navigate to folder where you copied the new TWRP,you should be able to see the file,select it ,choose recovery in the next menu and flash.
NOTE:If you chose to use Sultan's recovery.zip then just flash it normally.
4. Don't reboot come back to TWRP home ,goto reboot and recovery ,if TWRP says no OS installed ignore it.
Now voila you should have updated your firmware/BL.Congrats.
You can now install any rom that supports the new BL.Older roms won't boot on the new MM BL.So check the rom thread before installing the rom and later on quacking here about your device being stuck at bootlogo.
Notes
i)Neither I nor XDA will be responsible if your OPX bricks or explodes or ditches you and flies to space.
ii)We are not touching system partition so last installed ROM will be intact.
iii)This guide will leave you into bootable rom only if you have a rom installed that works on latest firmware.
iv)This can also be used to restore all your OPX partitions back to OOS3.x partition state,if you messed any.
v)In case you are using latest nightly (cm13) and face bootloop - go Here
psst:If you are not diggin the new BL,and wanna downgrade again ,back to old BL,check this post.
PS: (second one,I know) This guide was made by taking inspiration from Joshwin's post and devtry method.
Also click Thanks if I helped you

matwaking said:
Okay guys first let me tell you why I have created a new thread just for updating the BL and Firmware ,
I know we already have methods of updating like:
1. flashing the full OOS3 zip through stock recovery ,this method is quite simple for the ons who are on stock recovery and just want to their OOS version.If you fall in this category then you have no purpose here,you may leave.
2. Is method provided by our fav helping hand @Joshwin Aranha ,that method is sure for the rest of us who dont fall in the above category,but is way too long,although simple and effective still "long".
So I created this thread just to shorten the process provided by Joshwin.I also created this thread to help the official CM13 users who have problem with latest nightlies due to new bootloader or are stuck in bootlogo.
...
PS: (second one,I know) This guide was made by taking inspiration from Joshwin's post and devtry method.
Also click Thanks if I helped you
Click to expand...
Click to collapse
Booomshkalaka!!!
Great guide, can't test (already have new bootloader and too lazy to switch back but look very good.
Thx to all
Kurt

Kurt Krummbein said:
Booomshkalaka!!!
Click to expand...
Click to collapse
Lol .
Thanks mate.

Will this work if I'm in bluspark twrp but the previous version..? Or do I have to change to official twrp?

jonrodz said:
Will this work if I'm in bluspark twrp but the previous version..? Or do I have to change to official twrp?
Click to expand...
Click to collapse
Will work with any twrp,no requirement of official one.

Thanks, bro. One more doubt. I'm currently on DU rom with custom kernel... Do you think rom will boot after this..?

jonrodz said:
Thanks, bro. One more doubt. I'm currently on DU rom with custom kernel... Do you think rom will boot after this..?
Click to expand...
Click to collapse
No it wont,right now almost all the custom roms need to update to support new firmware.Only latest cm13 nightlies are booting now,also aosp compiled by olddroid for new BL(shh its only for testers right now)
also maybe the MIUI8 port ,just posted in the forums.

I'm a litte bit confused.
Currently I'm on nighty October 1st. (cm-13.0-20161001-NIGHTLY-onyx.zip)
Can i update the Bootloader with your method and after that booting up my current nightly version?
Or do I have to update after the bootloader update to nightly version 12 (the currently latest)?

jerikooo said:
I'm a litte bit confused.
Currently I'm on nighty October 1st. (cm-13.0-20161001-NIGHTLY-onyx.zip)
Can i update the Bootloader with your method and after that booting up my current nightly version?
Or do I have to update after the bootloader update to nightly version 12 (the currently latest)?
Click to expand...
Click to collapse
no update the BL using the steps above ,then flash the latest nightly.That way it would be good.
Or you can flash nightly first then update BL.Choice is yours.I recommend updating the BL first.

I followed your guide with a locked bootloader, and now I'm in bootloops . Just suggest you put a big red "make sure your bootloader is unlocked" in the steps, not in the footnote.

Duplicate post.Deleted

ccaappton said:
I followed your guide with a locked bootloader, and now I'm in bootloops . Just suggest you put a big red "make sure your bootloader is unlocked" in the steps, not in the footnote.
Click to expand...
Click to collapse
Reboot into fastboot mode and
Code:
fastboot oem unlock
And using a custom recovery and custom rom makes me assume one have unlocked bootloader

matwaking said:
Reboot into fastboot mode and
Code:
fastboot oem unlock
And using a custom recovery and custom rom makes me assume one have unlocked bootloader
Click to expand...
Click to collapse
Thanks! I actually relocked my bootloader not long after installed cm13, and disabled "unlock oem" in "developer settings"(I don't know why I did this). So both system and rec is inaccessible, and fastboot is useless in this case. Fortunately I followed the unbrick guide: http://forum.xda-developers.com/oneplus-x/general/guide-mega-unbrick-guide-hard-bricked-t3272108 and get the old bootloader back. Now I could enter CM13-09-28 with all my data intact.
Just hope to let people know the hard lesson I learned, and how to deal the bootloops.
And guys, NEVER RELOCK BOOTLOADER AGAIN!

ccaappton said:
Thanks! I actually relocked my bootloader not long after installed cm13, and disabled "unlock oem" in "developer settings"(I don't know why I did this). So both system and rec is inaccessible, and fastboot is useless in this case. Fortunately I followed the unbrick guide: http://forum.xda-developers.com/oneplus-x/general/guide-mega-unbrick-guide-hard-bricked-t3272108 and get the old bootloader back. Now I could enter CM13-09-28 with all my data intact.
Just hope to let people know the hard lesson I learned, and how to deal the bootloops.
And guys, NEVER RELOCK BOOTLOADER AGAIN!
Click to expand...
Click to collapse
Well no fix without any problems hehehe,.Haapy 4 u.
Click that button if you think my posts are useful

Is this enough to install CM14 or do i have to install the whole room and them flash CM14?

Manelit said:
Is this enough to install CM14 or do i have to install the whole room and them flash CM14?
Click to expand...
Click to collapse
taking you wanna flash ashwins cm14 right. You just wanna follow the instructions in first post and then flash the cm14.No need to install the whole Oos zip.
This way you should have updated BL and working cm14.
Just flash the cm14 after booting into new TWRP

I've just followed the procedure from OP and all went smooth as butter. Thanks
Directly after that (without reboot) I've installed the latest CM13 (with GApps) and Arsenic R24. Working as a charm

slaav said:
I've just followed the procedure from OP and all went smooth as butter. Thanks
Directly after that (without reboot) I've installed the latest CM13 (with GApps) and Arsenic R24. Working as a charm
Click to expand...
Click to collapse
Press that sweet sweet button mate

1.First copy both of the above files in your sdcard or otg or ext-sdcard,any place accessible in recovery.
2. Now boot into recovery Choose Install and choose the "OPXBLUpdateOOS3.1" zip and flash it.
3. Don't reboot now ,go to Install again ,this time use "Install Image" button in lower right corner,navigate to folder where you copied the new TWRP,you should be able to see the file,select it ,choose recovery in the next menu and flash.
4. Don't reboot come back to TWRP home ,goto reboot and recovery ,if TWRP says no OS installed ignore it.
Click to expand...
Click to collapse
Hi, everyone
I'm accidentally reboot device after second step. Now device freezing on "+1 powered by android". Can I remove this zip, or... what can I do next?)

walsash said:
Hi, everyone
I'm accidentally reboot device after second step. Now device freezing on "+1 powered by android". Can I remove this zip, or... what can I do next?)
Click to expand...
Click to collapse
u can flash bluespark twrp via fasboot
Sent from my ONE E1003 using XDA-Developers mobile app

Z1C: First Custom-ROM

Hello,
my Sony Xperia Z1 Compact has the standard Android 5.1 version of Sony. Now I want to upgrade to a new Android version.
I need it for everyday-use and it should be relatively stable. The camera is not that important, but it should work. I use especially the browser, so the mobile datas should also work. Otherwise it should be only be stable and the battery should not discharge too fast. Is there any good build for me?
That one looks very interesting: AICP 7.1 ROM amami (I can't link the URL, because I am a new user )
Is it okay for a Custom-ROM beginner? I think I will find some instructions and tutorials how to install it. I just have to know if it is a good choice.
If there are any English mistakes, please correct me. I have to improve my English.
Thank you!

Skylac06 said:
Hello,
my Sony Xperia Z1 Compact has the standard Android 5.1 version of Sony. Now I want to upgrade to a new Android version.
I need it for everyday-use and it should be relatively stable. The camera is not that important, but it should work. I use especially the browser, so the mobile datas should also work. Otherwise it should be only be stable and the battery should not discharge too fast. Is there any good build for me?
That one looks very interesting: AICP 7.1 ROM amami (I can't link the URL, because I am a new user )
Is it okay for a Custom-ROM beginner? I think I will find some instructions and tutorials how to install it. I just have to know if it is a good choice.
If there are any English mistakes, please correct me. I have to improve my English.
Thank you!
Click to expand...
Click to collapse
Anything over LP 5.1 has an unusable camera, with one possible exception: DU Marshmallow rom with custom kernel. Read op of this thread - https://forum.xda-developers.com/sony-xperia-z1-compact/general/z1c-marshmallow-roms-t3372565 Note the addenda at the bottom.

levone1 said:
Anything over LP 5.1 has an unusable camera, with one possible exception: DU Marshmallow rom with custom kernel. Read op of this thread - https://forum.xda-developers.com/sony-xperia-z1-compact/general/z1c-marshmallow-roms-t3372565 Note the addenda at the bottom.
Click to expand...
Click to collapse
Thank you for your fast answer.
Is the camera completely unusable or just "not good"? I do not need the best quality, but it should at least work and you should be able to identify what the picture shows.
However, thank you for the link. I think I will try it. Android 6 is, I hope so, an improvement. Maybe I will then upgrade to Nougat.
There are no other options like Ubuntu Touch or Sailfish, right?

Skylac06 said:
Thank you for your fast answer.
Is the camera completely unusable or just "not good"? I do not need the best quality, but it should at least work and you should be able to identify what the picture shows.
However, thank you for the link. I think I will try it. Android 6 is, I hope so, an improvement. Maybe I will then upgrade to Nougat.
There are no other options like Ubuntu Touch or Sailfish, right?
Click to expand...
Click to collapse
Put a piece of tape over your camera lens, and turn off the lights, and shake the phone back and forth while taking a picture... That's what most of the photos will look like.
No Sailfish, and @munjeni has built Ubuntu touch for Z1c, but I couldn't get the Internet to work, (except for Ubuntu store, which downloads apps fine). - https://mega.nz/#!YEpCHLoS!tRxZpJHUSKL_cZz9wisGZvWl7igYAlYJRjwbcT_s868 Besides that, fxp has built Firefox OS, but probably hard to find at this point, and there are a few MIUI builds out there that are very good. Check here - https://forum.xda-developers.com/showpost.php?p=71329395&postcount=5 and here - https://forum.xda-developers.com/so...lopment/23-2015-miui-v6-5-5-22-d5503-t3116494

Hello again,
I decided to try out some Custom-ROMs.
Now I find many different ways how to root my phone and unlock the bootloader. Which way do you here recommend?
And how difficult is going back to the stock ROM and lock the bootloader againg, if nothing works?
Thank you!

Skylac06 said:
Hello again,
I decided to try out some Custom-ROMs.
Now I find many different ways how to root my phone and unlock the bootloader. Which way do you here recommend?
And how difficult is going back to the stock ROM and lock the bootloader againg, if nothing works?
Thank you!
Click to expand...
Click to collapse
Backup TA - https://forum.xda-developers.com/crossdevice-dev/sony/universal-dirtycow-based-ta-backup-t3514236
Unlock bl - https://developer.sonymobile.com/unlockbootloader/unlock-yourboot-loader
Root and recovery :
Download custom kernel to pc, and extract boot img to ADB directory - https://forum.xda-developers.com/so...rnel-advanced-14-5-0-242-kernel-v1-0-t3096060 and download twrp img to ADB directory - https://www.androidfilehost.com/?fid=457095661767147235 then use fastboot commands to flash boot and recovery. Now you have recovery, and you can either flash SuperSU zip, or flash custom rom.
Restore TA - https://forum.xda-developers.com/crossdevice-dev/sony/poc-real-trim-instead-drm-fix-t3552893 or use Flashtool relock bl option - http://www.flashtool.net/

levone1 said:
Backup TA - https://forum.xda-developers.com/crossdevice-dev/sony/universal-dirtycow-based-ta-backup-t3514236
Unlock bl - https://developer.sonymobile.com/unlockbootloader/unlock-yourboot-loader
Root and recovery :
Download custom kernel to pc, and extract boot img to ADB directory - https://forum.xda-developers.com/so...rnel-advanced-14-5-0-242-kernel-v1-0-t3096060 and download twrp img to ADB directory - https://www.androidfilehost.com/?fid=457095661767147235 then use fastboot commands to flash boot and recovery. Now you have recovery, and you can either flash SuperSU zip, or flash custom rom.
Restore TA - https://forum.xda-developers.com/crossdevice-dev/sony/poc-real-trim-instead-drm-fix-t3552893 or use Flashtool relock bl option - http://www.flashtool.net/
Click to expand...
Click to collapse
One little question: if I unlock my bootloader, my complete internal storage is wiped, right?
But if my bootloader is locked, I can not use the nandroid-backup-function of TWRP, because I can not use the custom kernel to root my phone. (Am I right? )
Currently I only have done your first step - backup the TA.
And of course, thank you again. :fingers-crossed:

Skylac06 said:
One little question: if I unlock my bootloader, my complete internal storage is wiped, right?
But if my bootloader is locked, I can not use the nandroid-backup-function of TWRP, because I can not use the custom kernel to root my phone. (Am I right? )
Currently I only have done your first step - backup the TA.
And of course, thank you again. :fingers-crossed:
Click to expand...
Click to collapse
You can root with locked bl, but your options are: 1) use Kingroot, (and it's generally preferred to not keep Kingroot, so after rooting you can replace Kingroot with SuperSU or wipe everything and flash a new rom with SuperSU), or 2) downgrade to KK and use doomlord rootkit, then flash LP prf.

levone1 said:
You can root with locked bl, but your options are: 1) use Kingroot, (and it's generally preferred to not keep Kingroot, so after rooting you can replace Kingroot with SuperSU or wipe everything and flash a new rom with SuperSU), or 2) downgrade to KK and use doomlord rootkit, then flash LP prf.
Click to expand...
Click to collapse
Okay.
I would like to avoid using Kingroot and downgrade to 4.4 is not even better.
But I found the Sony-Flashtool "Emma" for Windows. It seems to be able to restore completely the Stock-5.1-ROM. So I think I don't need a whole nandroid-backup. Am I right?
So I will unlock my bootloader, flash the custom kernel using TWRP-Tool and have a rooted phone. Then I am able to flash any custom-ROM I want to try out.
Did I misunderstand anything?

Skylac06 said:
Okay.
I would like to avoid using Kingroot and downgrade to 4.4 is not even better.
But I found the Sony-Flashtool "Emma" for Windows. It seems to be able to restore completely the Stock-5.1-ROM. So I think I don't need a whole nandroid-backup. Am I right?
So I will unlock my bootloader, flash the custom kernel using TWRP-Tool and have a rooted phone. Then I am able to flash any custom-ROM I want to try out.
Did I misunderstand anything?
Click to expand...
Click to collapse
True, Emma will restore you to stock. The backup would be if you want to restore the particular state of your phone right now.
Unlock bl, then flash the boot and recovery imgs, and you will be able to get into recovery. You'll want to have whatever rom you want to flash already downloaded on sdcard.

It works.
Now I have the AICP 12.1 7.1.2 Nightly Version.
Only the camera is not good, but better than expected. The aroma-GApps-package does not work, the GUI is hidden under the GUI of TWRP, but you can select your choice. However, after clicking install nothing was installed. After I downloaded and installed the super-GApps-package everything works fine.
If I find some issues, where can I report them? In the officiall AICP-12.1 N 7.1 amami Thread?
And at least a great thank you to levone1. :fingers-crossed:

Skylac06 said:
It works.
Now I have the AICP 12.1 7.1.2 Nightly Version.
Only the camera is not good, but better than expected. The aroma-GApps-package does not work, the GUI is hidden under the GUI of TWRP, but you can select your choice. However, after clicking install nothing was installed. After I downloaded and installed the super-GApps-package everything works fine.
If I find some issues, where can I report them? In the officiall AICP-12.1 N 7.1 amami Thread?
And at least a great thank you to levone1. :fingers-crossed:
Click to expand...
Click to collapse
https://forum.xda-developers.com/so...lopment/rom-aicp-11-0-mm-6-0-1-amami-t3428288

levone1 said:
https://forum.xda-developers.com/so...lopment/rom-aicp-11-0-mm-6-0-1-amami-t3428288
Click to expand...
Click to collapse
That is the thread I meant, but I can not post any URLs.

Best Custom ROM for Z1C
Not to open a new thread, which Custom ROM would you guys recommend to install on my Z1C?
I'm having some issues atm. It keeps restarting; I did a factory reset, it worked well for a while, now the issue is back. However, it does seem to work fine when hooked up to my PC (with the PC Companion active). Before I start shopping for a new phone, I'd like to root it first.
For this purpose, I'd like to know whick custom ROM is the most stable that you would recommend I install. Also, I'd be very helpful if you could direct to a good guide about the entire process.
Thank you in advance, I appreciate it!

levone1 said:
Backup TA - https://forum.xda-developers.com/crossdevice-dev/sony/universal-dirtycow-based-ta-backup-t3514236
Unlock bl - https://developer.sonymobile.com/unlockbootloader/unlock-yourboot-loader
Root and recovery :
Download custom kernel to pc, and extract boot img to ADB directory - https://forum.xda-developers.com/so...rnel-advanced-14-5-0-242-kernel-v1-0-t3096060 and download twrp img to ADB directory - https://www.androidfilehost.com/?fid=457095661767147235 then use fastboot commands to flash boot and recovery. Now you have recovery, and you can either flash SuperSU zip, or flash custom rom.
Restore TA - https://forum.xda-developers.com/crossdevice-dev/sony/poc-real-trim-instead-drm-fix-t3552893 or use Flashtool relock bl option - http://www.flashtool.net/
Click to expand...
Click to collapse
OP's intention is different than mine but this approach looks suit me well. I would like to keep my stock (14.6.A.1.236), so can I flash kernel.sin from Stock Rom via Flashtool after restoring TA and keep root status and recovery or should I use the custom kernel henceforth?

prustr said:
OP's intention is different than mine but this approach looks suit me well. I would like to keep my stock (14.6.A.1.236), so can I flash kernel.sin from Stock Rom via Flashtool after restoring TA and keep root status and recovery or should I use the custom kernel henceforth?
Click to expand...
Click to collapse
I don't think I've ever done it that way, but I don't see why not. As long as you don't wipe your recovery, you should still be good... (if you'd rather use stock kernel for whatever reason).

levone1 said:
I don't think I've ever done it that way, but I don't see why not. As long as you don't wipe your recovery, you should still be good... (if you'd rather use stock kernel for whatever reason).
Click to expand...
Click to collapse
Thanks for the answer. Actually the whole story is, the phone belongs to my wife and she is neither techsavvy nor has patience with electronics, especially when any problem come up. I would like to remove bloatwares and have backup yet keep the phone as Stock as possible. I'm trying to keep my ROM related modifications at minimum. That's been said, I would welcome any correction on this manner as I feel you found returning the stock kernel is pointless.

prustr said:
Thanks for the answer. Actually the whole story is, the phone belongs to my wife and she is neither techsavvy nor has patience with electronics, especially when any problem come up. I would like to remove bloatwares and have backup yet keep the phone as Stock as possible. I'm trying to keep my ROM related modifications at minimum. That's been said, I would welcome any correction on this manner as I feel you found returning the stock kernel is pointless.
Click to expand...
Click to collapse
I wouldn't say pointless, but for the most part, any custom kernel is an improvement. Most of the customizations wouldn't mean anything to someone like that, but I doubt there's any harm or risk in keeping it.

Note 4 after Flashing TWRP bootloop

Hi Guys,
I have a N910F Device , so I have yesterday worked on Rooting the Rom and Install Custom Rom.
I have using a Tutorial from Saarliner Rom Devloper and his Rom N4Rom but after I have flashing TWRP over Odin and get in Odin and erase all and install Rom there were Bootloop.
After I have flashed Remix Rom Project or other Rom ever and ever the Same ever Bootloop
My Question what I have make wrong?
- Download Mode
-TWRP Recover flashing
- Erease all up to Point Micro SD
- Flashing New Rom
Isn´t Correct that?
I knowing from S2/S3/S4/S5
First Root stock Rom then TWRP then Custom Rom or was it right?

1. 910F is known to have an eMMC problem - read about it
2. when you flash an 910F it is advised to do it in a cool environment - no joke, get a fan to blow on it or something - because heat produce the damage from point 1
3. it looks ok what you did, but did you updated to the ROM required BL and Modem ? did you respected all the instructions? why don't you try to talk with the saarliner rom creator/developer?

To 1. isn´t present , because Stock Rom are working fine and without any Reboots or Errors.
To 2. yes it was very hot.
To 3. Yes i did and yes i have read it 2 times, so my Question is when I would like to install a Custom Rom, i must have a rooted Stock then Recovery TWRP flash then Custom Rom isn´t it?
Because the Way from Saarliner look like not complete, i can´t imagen that it work so in the Tutorials. The Developer self has a Broken N4.

bluedesire said:
Question is when I would like to install a Custom Rom, i must have a rooted Stock then Recovery TWRP flash then Custom Rom isn´t it?
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Not obligatory to have a rooted stock. After flashing TWRP, you can root it also - my advice is to use Magisk for root.
Also as advice - if saarliner rom is not working, try some other rom. The snapdragon forum has some roms, both touchwiz based and AOSP.

I will try it out.