How to root a Samsung Galaxy J7 running 7.1.1? - Samsung Galaxy J7 (2017) Questions & Answers

Hi! My old phone broke and I'm trying to root another phone so I can flash a Verizon ROM to it so my SIM card will be compatible. I've tried my hand at one click root programs (which either don't support my phone or fail to fully root) and different tutorials (yet the TWRP screen never shows up when I enter Android Recovery). I have a SM-J700T1 running on Android version 7.1.1. Any advice, pointers, or guides would be greatly appreciated! Thank you!

To flash a Custom ROM on phone it's NOT required that phone's Android got rooted beforehand: All what's needed is phone's bootloader gets unlocked ( keyword: FASTBOOT ) and a working Custom Recovery like TWRP to flash the Custom ROM.

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Need help flashing ROM on I545

Hi it is the first time I am flashing Android ROM. I have done some reading already. Before I start, I still have a few questions and also want to make sure I am doing it right.
I own the Galaxy S4 Verizon I545. It is running Samsung ROM Android 4.4.2, Baseband I545VRUFNC5. My goal is to flash a new ROM with recent Android versions, hopefully 7.1.1 (but I would settle with Marshmallow if that is more stable), it can be close to AOSP, I don't need ROMs with extra features.
In my understanding, the bootloader is locked, it will only load signed kernels and recovery. And then the kernel would load the system. In order to flash the system, it is best to flash the recovery first with TWRP. TWRP is modded with loki hack so it would load with the locked bootloader.
So here are my questions:
1. Does it matter which firmware/baseband I am currently on? For some phones (LG G2) I heard newer firmware fixed the loki hack. Should I update to the latest Samsung rom or leave it at NC5?
2. I don't see many ROM posted for the i545, which one is the most recent and reasonable stable? The Cyanogen website is down, should I try LineageOS?
3. I see different instructions for flashing TWRP. Can I flash it with just Odin? Some instruction mentioned rooting the phone first with KingRoot or other root, and then use dd. Does the phone have to be rooted? (I prefer not to if it is not necessary)
4. If after I flashed recovery, it fails to boot into TWRP, what can I do to restore everything to default?
5. The kernel will be untouched in the process right? I am only flashing recovery and system ROM, and the kernel will work fine with the new system ROM?
Here are the step and software I plan to use:
0. reset the phone to factory
1. use Odin to flash TWRP 2.8.7
2. download a ROM compatible with I545 and place it on the phone
3. flash the system using TWRP
Any feedback would be appreciated.
PS: Also I have a LG G2 D801. I would flash that phone instead if it is easier. I just want to get started and learn some things along the way.
https://forum.xda-developers.com/galaxy-s4-verizon
Oh Sorry. Didn't notice there is another forum. Should I repost there?
Yes.
1. Yes, it does matter. As you said, newer firmwares have fixed the exploits which make the phone harder to hack.
2. Any ROM should support your phone. They are generally unified.
3. In the name of anything holy, do not root with KingRoot. If you want to root, then the only way to go is CF-Auto-Root.
Rooting is sometimes necessary because recovery won't always install with Odin.
4. Flash stock ROM.
5. Kernels are specific to ROMs. So no, the kernel won't be untouched.

LineageOS on a vzw Galaxy S5?

Can I put LineageOS on my Galaxy S5 using SafeStrap? If not, would Odin do the trick instead?
What, if anything, do I need to do to maintain root?
Do I need to unlock the bootloader before flashing the ROM?
Do the steps in the above link work on unlocking the verizon bootloader or will I make a brick?
If there's a link to getting LineageOS onto my Verizon S5 while keeping root please point me in the right direction. Thank you.
androidman807 said:
Can I put LineageOS on my Galaxy S5 using SafeStrap? If not, would Odin do the trick instead?
What, if anything, do I need to do to maintain root?
Do I need to unlock the bootloader before flashing the ROM?
Do the steps in the above link work on unlocking the verizon bootloader or will I make a brick?
If there's a link to getting LineageOS onto my Verizon S5 while keeping root please point me in the right direction. Thank you.
Click to expand...
Click to collapse
you first need to root then unlock bootloader then install twrp then flash Lineage and Gapps and your all set , all information regarding how to root and unlock bootloader are in the vzw section , do make a full back up of your sdcard(micro sd card) to your computer because unlocking the bootloader will wipe/format your memory card(keep that in mind)
also i suggest you update your modem and bootloader , just in case you would like to test the ported rom which most of them run on a higher bootloader and with a old bootloader you will face issues with wifi and nav buttons specially with the vzw variant (i also have a vzw) , update it to i think the highest so far by @jrkruze is qf2 , for example the skiesrom (a s8 port) runs on a qf5 bootloader but updating vzw bootloader to qf2 fixes the wifi and nav button bugs.
Good Luck and also do properly read the instructions word for word.
I'm so grateful for your response. You've been down this road and know the traps. I believe my original post has the right thread on unlocking the bootloader for vzw, and I appreciate the warning about it erasing the micro-sd card.
Two follow-up questions:
Where can I find the update for the modem?
Also to avoid the wifi and nav problems, do I want the QF2 or QF5? And where do I find those? Here it says to use latest bootloader (QA1) with QF2 modem. Does that make sense? If so I just need to know where to find those.
Thank you again so very much.
KazuDante said:
you first need to root then unlock bootloader then install twrp then flash Lineage and Gapps and your all set , all information regarding how to root and unlock bootloader are in the vzw section , do make a full back up of your sdcard(micro sd card) to your computer because unlocking the bootloader will wipe/format your memory card(keep that in mind)
also i suggest you update your modem and bootloader , just in case you would like to test the ported rom which most of them run on a higher bootloader and with a old bootloader you will face issues with wifi and nav buttons specially with the vzw variant (i also have a vzw) , update it to i think the highest so far by @jrkruze is qf2 , for example the skiesrom (a s8 port) runs on a qf5 bootloader but updating vzw bootloader to qf2 fixes the wifi and nav button bugs.
Good Luck and also do properly read the instructions word for word.
Click to expand...
Click to collapse
androidman807 said:
I'm so grateful for your response. You've been down this road and know the traps. I believe my original post has the right thread on unlocking the bootloader for vzw, and I appreciate the warning about it erasing the micro-sd card.
Two follow-up questions:
Where can I find the update for the modem?
Also to avoid the wifi and nav problems, do I want the QF2 or QF5? And where do I find those? Here it says to use latest bootloader (QA1) with QF2 modem. Does that make sense? If so I just need to know where to find those.
Thank you again so very much.
Click to expand...
Click to collapse
The Latest bootloader (after you unlocked your current bootloader) : https://forum.xda-developers.com/showpost.php?p=73734257&postcount=3143
latest modem : https://forum.xda-developers.com/showpost.php?p=61802396&postcount=1 ( use the ones in the odin section , you will need to be bootloader unlocked and have odin+latest samsung drivers installed)
latest twrp : https://dl.twrp.me/klte/ ( the ones that ends with .tar are for flashing using odin , since you dont have twrp yet but flashing twtp comes last after rooting and unlocking bootloader and updating bootloader then update the modem then odin flash twrp then have lineageos and nougat gapps on memory card. reboot while holding vol up and home button to reboot into twrp to install lineageos system then gopengapps , afterwards you can install magisk to have root access on lineageOS as well .
p.s after you unlock bootloader and the system reboots normally return to download mode then use odin to flash twrp , i just noticed(remembered that latest bootloader update uses twrp and not safestrap recovery.
to unlock current bootloader : https://forum.xda-developers.com/showpost.php?p=71202995&postcount=3
Thank you so much. So if I understand right it's:
1) UNLOCK bootloader
2) UPDATE bootloader (latest is QF2)
3) update modem (latest tar was QI2)
4) flash TWRP from Odin (you linked to klte version; qualcomm but I have vzw)
5) install LineageOS and gapps from TWRP
6) install magisk from TWRP to get root
Is that correct?
Correct bootloader and modem versions?
OK to use klte for Verizon?
Magisk is for root, done last, and not superSu?
If all those are Yes, then I guess the prep work is done and now I just have to bite the bullet, do a safestrap and titanium backup and dive in.
Thanks again - I really do appreciate it.
KazuDante said:
The Latest bootloader (after you unlocked your current bootloader) : https://forum.xda-developers.com/showpost.php?p=73734257&postcount=3143
latest modem : https://forum.xda-developers.com/showpost.php?p=61802396&postcount=1 ( use the ones in the odin section , you will need to be bootloader unlocked and have odin+latest samsung drivers installed)
latest twrp : https://dl.twrp.me/klte/ ( the ones that ends with .tar are for flashing using odin , since you dont have twrp yet but flashing twtp comes last after rooting and unlocking bootloader and updating bootloader then update the modem then odin flash twrp then have lineageos and nougat gapps on memory card. reboot while holding vol up and home button to reboot into twrp to install lineageos system then gopengapps , afterwards you can install magisk to have root access on lineageOS as well .
p.s after you unlock bootloader and the system reboots normally return to download mode then use odin to flash twrp , i just noticed(remembered that latest bootloader update uses twrp and not safestrap recovery.
to unlock current bootloader : https://forum.xda-developers.com/showpost.php?p=71202995&postcount=3
Click to expand...
Click to collapse
androidman807 said:
Thank you so much. So if I understand right it's:
1) UNLOCK bootloader
2) UPDATE bootloader (latest is QF2)
3) update modem (latest tar was QI2)
4) flash TWRP from Odin (you linked to klte version; qualcomm but I have vzw)
5) install LineageOS and gapps from TWRP
6) install magisk from TWRP to get root
Is that correct?
Correct bootloader and modem versions?
OK to use klte for Verizon?
Magisk is for root, done last, and not superSu?
If all those are Yes, then I guess the prep work is done and now I just have to bite the bullet, do a safestrap and titanium backup and dive in.
Thanks again - I really do appreciate it.
Click to expand...
Click to collapse
yes thats correct , also there is no vzw variant of lineage since vzw is merged under klte , so every rom you download the one you have to choose is klte unless the dev make a build for each variant but not likely to happen anymore.
A very basic assumption may have been overlooked, but it seems the CID on my lollipop PB1 is 11 Toshiba eMMC. Method 2 of unlocking stopped at step 4 with an error in the terminal screen indicating this is only for Samsung eMMCs. Is it possible to unlock an 11, and if so, where would I find those steps?
KazuDante said:
yes thats correct , also there is no vzw variant of lineage since vzw is merged under klte , so every rom you download the one you have to choose is klte unless the dev make a build for each variant but not likely to happen anymore.
Click to expand...
Click to collapse
androidman807 said:
A very basic assumption may have been overlooked, but it seems the CID on my lollipop PB1 is 11 Toshiba eMMC. Method 2 of unlocking stopped at step 4 with an error in the terminal screen indicating this is only for Samsung eMMCs. Is it possible to unlock an 11, and if so, where would I find those steps?
Click to expand...
Click to collapse
sadly cid 11 cannot be unlocked , best option is to only change current S5 with another S5 and hope its a CID 15 , or sadly get another phone but check xda forum to see if it has any latest custom roms and bootloader can be unlocked.
But for CID 11 theres no unlocks for those , only thing is safestrap roms that allows you to run ports like PhoenixRom and other stock but modded roms but using safestrap
Thanks you so much again. How can I tell which ROMs are stock I can use in safestrap (like Phoenixrom) and which are custom I can't use (like LineageOS)?
And if I have a safestrap backup to my sd card of my stock lollipop and don't like phoenix (which seems to be MM) can I restore from safestrap back to my stock LL?
KazuDante said:
sadly cid 11 cannot be unlocked , best option is to only change current S5 with another S5 and hope its a CID 15 , or sadly get another phone but check xda forum to see if it has any latest custom roms and bootloader can be unlocked.
But for CID 11 theres no unlocks for those , only thing is safestrap roms that allows you to run ports like PhoenixRom and other stock but modded roms but using safestrap
Click to expand...
Click to collapse
androidman807 said:
Thanks you so much again. How can I tell which ROMs are stock I can use in safestrap (like Phoenixrom) and which are custom I can't use (like LineageOS)?
And if I have a safestrap backup to my sd card of my stock lollipop and don't like phoenix (which seems to be MM) can I restore from safestrap back to my stock LL?
Click to expand...
Click to collapse
that im not sure about that so i cant give you any pointers since i have not done anything with safestrap besides the process to unlock the bootloader.
Thanks anyway. It seems it should work, since safestrap won't disappear. Maybe I should post a new thread. Thank you again for all your time.
KazuDante said:
that im not sure about that so i cant give you any pointers since i have not done anything with safestrap besides the process to unlock the bootloader.
Click to expand...
Click to collapse
I am also essentially looking to install LineageOS on my Galaxy S5, but before proceeding, I just wanted to make sure that what I'm looking to do is correct. Currently I am running an old version of PhoenixROM with an old unlocked bootloader. I know that I will need to update the bootloader in order to prevent issues, such as wifi not working.
Should all I need to do is follow JKruse's instructions here, flashing LineageOS as the last and final step? I'm hoping that it is this easy, but I do have my doubts and that is why I am asking on here for advice.
Thank you to all in advance!

How to unbrick my ZTE Axon 7 mini b2017g

Dear Seniors.
I am facing great hardship because my phone is stuck at boot logo.
No booting in recovery mode to flash another rom.
I did unlock bootloader of it by using tuliptool with success. After that i flashed custom rom in it. after reboot it is happening that.
Please suggest to recover it.
Did you flash twrp after unlocking? Did you make backup of stock ROM? Perhaps find a version of the factory firmware and flash that.
Dear I have no backup and i flashed TWRP recovery.......
It is to aware you that i did relock bootloader now my phone is working properly. but i am unable to enter recovery mode. !!!
Now my phone is running android 6.0.1 B02
But i am failed to root this rom uptill now due above mentioned problem.
modorate said:
Dear I have no backup and i flashed TWRP recovery.......
It is to aware you that i did relock bootloader now my phone is working properly. but i am unable to enter recovery mode. !!!
Now my phone is running android 6.0.1 B02
But i am failed to root this rom uptill now due above mentioned problem.
Click to expand...
Click to collapse
I found software update notification but when i update an error accruing while update. (This update not compatible with this device"
In easy words......... my recovery.img has been corrupted. I have no idea to get rid of this situation.
I planned to unlock my Mini's bootloader this weekend. After reading this post, I decided to act later until the root cause has been figured out.
bao_gg said:
I planned to unlock my Mini's bootloader this weekend. After reading this post, I decided to act later until the root cause has been figured out.
Click to expand...
Click to collapse
Several people myself included have been able to use tuliptool to successfully unlock and root the device.
mine is hard bricked too. but I think it is worse than the case listed on the op.
if you want to hard bricked these are the steps:
follow the procedure to install the Spanish ROM 6.1, than another android m b12, than finally the android seven......use tulip tool and install twpr fine, root ect. amazing ROM.......buuuuut......I lost my IMEI somewhere in this process, and the original FTM which had a small menu changes to another static one, without the menu.
I needed this menu to open the com port to fix the IMEI. than I had the brilliant idea to re-flash android M via twrp (without modifying the zip file to remove the recovery, something I knew so well from the older axon mini).
results:
-lost twpr because the stock ROM wrote over it,
-cannot boot the OS because I flashed android m but the phone had the aboot 7.
-i now have a brick
I need a genious to sujest something to bring it back to life........sh....t...sh...t.....sh...t
any chances I could inject aboot7 via ADB through my dead recovery which somehow the phone recognises? ADB shell still seems to be working
thanks

Need help jumping back into things - Unlock bootloader, update TWRP

Hey I've been out of the rooting/custom rom scene for a while and would love to get back in. I have a rooted Verizon S5 with Safestrap 3.75/TWRP 2.7.1.0, Android 4.4.2 and 15xx eMMC CID and I would like to install the latest LineageOS version.
From what I understand, in order to get to my goal of installing the latest LineageOS I would need to:
1. Unlock my bootloader (essentially turning my retail S5 into a Dev Edition)
2. Install latest TWRP version
3. Wipe and install LineageOS
I don't know if my bootloader is unlocked already or not. When booting, the lock symbol is open and it says 'unlocked' but I'm not sure if that is for the bootloader or if that is for carrier locking as I do remember unlocking my S5 to work with other carriers once I left Verizon. I don't think my bootloader is unlocked as that is a pretty recent development and I have been out of this scene for a few years. Is there another way to make sure mine is locked or not?
From what I read, I must have TWRP 3.2.1-0 or newer to get LineageOS. Is there a way to just update Safestrap with a newer TWRP version or do I need to uninstall completely? How can I do this without bricking my device? I feel like this is where I am going to have the most issues as none of the threads I have read really show any instructions for people in this situation.
Once my device has the right TWRP version and unlocked bootloader I think the install of the rom should go smoothly but I want to make sure that I don't brick my device on the way there. Any help would be appreciated.
mint_optics said:
Hey I've been out of the rooting/custom rom scene for a while and would love to get back in. I have a rooted Verizon S5 with Safestrap 3.75/TWRP 2.7.1.0, Android 4.4.2 and 15xx eMMC CID and I would like to install the latest LineageOS version.
From what I understand, in order to get to my goal of installing the latest LineageOS I would need to:
1. Unlock my bootloader (essentially turning my retail S5 into a Dev Edition)
2. Install latest TWRP version
3. Wipe and install LineageOS
I don't know if my bootloader is unlocked already or not. When booting, the lock symbol is open and it says 'unlocked' but I'm not sure if that is for the bootloader or if that is for carrier locking as I do remember unlocking my S5 to work with other carriers once I left Verizon. I don't think my bootloader is unlocked as that is a pretty recent development and I have been out of this scene for a few years. Is there another way to make sure mine is locked or not?
From what I read, I must have TWRP 3.2.1-0 or newer to get LineageOS. Is there a way to just update Safestrap with a newer TWRP version or do I need to uninstall completely? How can I do this without bricking my device? I feel like this is where I am going to have the most issues as none of the threads I have read really show any instructions for people in this situation.
Once my device has the right TWRP version and unlocked bootloader I think the install of the rom should go smoothly but I want to make sure that I don't brick my device on the way there. Any help would be appreciated.
Click to expand...
Click to collapse
The latest instructions to root your phone & more can be found at https://forum.xda-developers.com/verizon-galaxy-s5/development/rom-t3855148.

[Solved]: from totally stock 8.1, how to backup, root and install custom roms?

Hello,
I received a totally stock G4+ 16Gb 2Go XT1642.
The version of installed rom is 8.1.0 OPJ28.111-22
security patch 1/12/2018
baseband M8952_70030.25.03.77R ATHENE_EMEA_DSDS_CUST
kernel 3.10.84-g4bcbf43
I owned a E2015 with custom roms but since 4 years I forgot all steps to achieve root etc.
I read that there's a risk to brick the phone or loose imei.
So could you redirect me to simple explanation to get root and other steps without screwing up the device
what I would like:
unlock bootloader and delete message
install twrp
make a backup of stock rom (and imei infos)
root (with magisk)
make a backup of rooted stock rom
install custom rom (preferably with working led), 32 or 64bits?
Could somebody take a few minutes to guide me???
Thanks in advance
ok , finally found
the same way for E2015
now trying some roms expecting find the best of both worlds

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