[WIP] What you need to know before, during and after modifying your verizon S4

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decaturbob

Senior Member
Mar 30, 2011
2,492
842
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To all:

This thread will become a sticky with links to other informative threads concerning verizon S4 and what you need to understand in modifying the S4. Please do not post questions in this thread as this is a WIP. Please do not post comments in this thread. If you want to make a thread contribution, post links to information or an informative post please do.

Clearly the S4 is one the most popular and effective phones available today. Many S4 owners wish to modify their phone with custom kernels and custom Roms. There are limitations on what you can and can't do with the S4 based on the firmware release of the phone. Modifying the phone involves risk which can end up costing the owner time and money to correct. The more people understand when it comes to the firmware limitations, ADB, Odin process the better prepared they are to minimize risk and the repetition of mistakes.

>>>>Can KitKat NC5 be rooted?? A NEW native method of rooting NC5 if you took the OTA update is NOW AVAILABLE<<<<<

>>>>[HOW TO] [ROOT] [APK] Root for NC5 OTA (All Kitkat devices) without PC!!!<<<<<
http://xdaforums.com/showthread.php?t=2784138


NC5 native root method (tower root) video by tomsgt/rootjunky
https://www.youtube.com/watch?v=i3JOeQSvxD4

>>>>Please note that the processes involving upgrading/downgrading must be followed as written. Also be sure to scan those threads for any additional information. I strongly urge to set up a check list. If you miss a step, you will have to start all over, you may soft brick your phone, you may turn your phone into a paperweight <<<<<

[HOW-TO]Upgrade to 4.4.2 VRUFNC5 and keep root (for NC2 and MK2 devices) [05/13/2014]
http://xdaforums.com/showthread.php?t=2726868 by surge1223


4.x to 4.4.2 SAFE Up & Downgrade w Root n SafeStrap feat. 1File/Flash&Done!MK2-NC2/NC5
http://xdaforums.com/showthread.php?t=2720163 by gigilie


How I downgraded from NC5 OTA to MK2 and back to Rooted NC5!!! Complete Step-By-Step
http://xdaforums.com/showthread.php?t=2763834 by techguy2002


Helpful videos
Verizon Galaxy S4**KitKat (NC5) Upgrade**With Root&Tethering
http://www.youtube.com/watch?v=AIRoQKTLeJQ by Bobby Onesios

Verizon Galaxy S4 KitKat**DOWNGRADE**to Jellybean
https://www.youtube.com/watch?v=ZweIJrompdk&index=1&list=FLxv0tpwsgGZLKkTDHG1sC8A by Bobby Onesios

Verizon Galaxy S4 Odin Restore and Unbrick
http://www.youtube.com/watch?v=GL8XwuRYoWU&feature=youtu.be by tomsgt (rootjunky)


Verizon Galaxy S4 Odin Restore and Unbrick
All revisions of the I545 after MDK (ME7, MI1, MJ7, MK2) can NOT have a custom recovery, only Safestrap can be used.

To locate your firmware version (build number) use Settings/More/About phone. Read the "Build number". The last 3 characters are how we describe what version your phone is using and why we always ask what build or base you have. Do not confuse this with the radio baseband.

You can not flash to previous firmware releases.

USB communication with S4 can be touchy, I recommend only using the samsung USB cable that was provided with the phone.

All files downloaded need to be verified to their checksum MD5. There are free md5 checkers for windows. I strongly urge to download to PC and copy to extsd card.

I do not have experience with MDK firmware based phones and the loki process for installing custom recoveries. I am sure we have plenty of people who do that can contribute to this sticky.

Can someone explain to me what makes a rom safestrap compatible? What can I do to a rom to make it boot with safe strap?
The ROM needs to be built to use the stock TouchWiz kernel that's on the phone, as Safestrap can't replace the kernel. (Flashing a non-Samsung kernel will set the "Knox Warranty Void" flag.) per k1mu


"The number one reason people brick their Verizon Galaxy S4 phones is due to attempts to flash recovery using Goo Manager, dd, and other tools without understanding when those will or won't work. The Verizon S4 is very locked down, and will reject such attempts in most cases."
k1mu

Important to read this link first
Customizing your Verizon Galaxy S4 - what's possible and what's not by k1mu
http://xdaforums.com/showthread.php?p=48683964


Custom Recovery for Verizon S4: Only MDK baseband!!!!! by k1mu
http://xdaforums.com/showthread.php?t=2578569

How to update from ME7 to MJ7, root, install safetrap and HD11 guide by decaturbob
http://xdaforums.com/showthread.php?t=2579278


[guide]how to use adb,ddms and take a logcat by Mr.Gentleman
http://xdaforums.com/showthread.php?t=2304122

[GUIDE] How to Enter ODIN and Recovery Modes on Verizon Galaxy S4 by open1your1eyes0;
http://xdaforums.com/showthread.php?t=2290771

[ROOT] Saferoot: Root for VRUEMJ7, MK2, and Android 4.3 by k1mu
http://xdaforums.com/showthread.php?t=2565758

[RECOVERY LOCKED] Safestrap Recovery v3.71 [2013-12-27 EXFAT Fix by hashcode
http://xdaforums.com/showthread.php?t=2441441

Safestrap 3.71 compatible 4.2/4.3 ROMS (work in progress)
http://xdaforums.com/showthread.php?t=2630040

Safestrap 3.72 compatible kitkat 4.4 ROMS (work in progress)
http://xdaforums.com/showthread.php?t=2769389

Informative thread by tomsgt with videos concerning rooting, loki, etc
http://xdaforums.com/showthread.php?t=2337590

Again, please do not post questions in this thread as this is a WIP. Please do not post comments in this thread. If you want to make a thread contribution for links to information or an informative post please do.
 
Last edited:

decaturbob

Senior Member
Mar 30, 2011
2,492
842
Decatur
I copied this from andriodforum post and give full credit to Nomorefear,


ADB- Android Developers Bridge: The program used to talk to your phone and give it commands (USE IT ONLY IF YOU FEEL COMFORTABLE LEARNING)

Root/Rooting- Getting the administrative control i.e, "hacking", "jailbreak", etc, etc...... Root is also defined as the base folder of your SD card. If you are told to place a file into root then this is what is meant. REMEMBER-root/rooting-admin control OR base folder on SD card. Please re read instructions you find in the forums throughly so that you may be able to save yourself some time and heartache.

Superuser
- program which gives authority for another program to have Root access. Program examples are "setcpu", "terminal emulator", "auto killer memory optimizer"

Recovery- a useful tool that allows root users to flash roms, reinstall backups, and do many other fantastic things to help keep your phone from becoming a brick.

Flash/flashing- the action of "installing" a file that isnt normally installed by conventional means i.e. flashing a rom, flashing a radio, flashing a kernel, etc etc. '/!\ WARNING: flash at your own risk and make sure you have over fifty percent battery and do not interrupt the flashing procedure. YOU HAVE BEEN WARNED!!!!!'

Brick- making a device useless so that it is rendered a mass of uselessness i.e. PWNED, paperwieght, borked

Terminal Emulator- a program which simulates ADB and basically is a way to communicate with the phone and provide a command language that is for upper eschelon (1337) users to helm.

Nand/nandroid backup- In your recovery terminal there is an option to make a "Nand backup". This is a restore point or in gaming terms a save point. As most of us gamers know, if you save before you go further in the game and you make a poor choice then you can reset and go back to where you started. This is the same thing but for your phone

Kernel
Easiest way to put it: it is the thing that manages your system resources. This puppy can help make your phone run better and also overclock it.

Overclocking Dont worry I wasnt gonna leave this term out. This is written for newbs so lets just say this is the term for making your phone run faster. IMPORTANT NOTE!!! Overclocking your phone too far can make it seize up or go into bootloops if done incorrectly! It can also make your phone run hot. BEWARE!!!!

PRL Preferred Roaming List: This is just an updated list of what cellphone towers have been added to the system. This means better coverage when updated" - Nomorefear

Here are some other definitions not covered by Nomorefear. For the following, I give credit to Wiki CMS Groupware (makers, I mean "developers" of Titanium Backup). I've also modified their stuff a bit. Link at end of post.

More DEFINITIONS

system app - A system app is an application that resides in /system/app/ and thus is technically a part of your ROM

user app - is an application that resides either on the /data partition of your phone's internal memory or on your SD card

system data - In the vast majority of cases, system data is simply the data that belongs to system apps or services.

root - is the UNIX system administrator (UNIX is an operating system [OS] just as MicroSoft "Windows" is an OS)

NAND locked (or "S-ON") device - is a device where the ROM (usually mounted at /system) is write-protected in hardware and thus cannot be modified, even if you have root privileges. Sometimes you get the illusion that you can write to /system, but in any case all changes will disappear after a reboot. This is why these devices often have "temp root" instead of permanent root". In order to get permanent root access, you need to make your device "NAND unlocked" (or "S-OFF") first. In other words, you need to "unlock the bootloader".

shell - simply is a "command line" to type commands on your Android phone. If you're comfortable with typing on the phone then you can just use the ConnectBot (free) app or the Better Terminal (paid) app. If you want (or need) to type commands from a computer, just install the Android SDK, then enable "USB debugging" on your phone and finally, connect your phone through USB and type "adb shell" on your computer.

Here is another definition from kejlyCZ (link at end).

"ROM - is abbreviation for Read Only Memory. In this case, it's the part of the phone software, which is provided by manufacturer (operating system, basic built-in programs) and it's protected from deleting by user. It's the same like when you install Windows, the clean installation with no user data and user installed programs. In Android, ROM means the Android operating system. It can be the official ROM (updated by manufacturer) or unofficial ROM (AKA "Custom ROM) ('brewed' by community,.....

And FINALLY (unless I edit later):

Boot Loop or Boot Looping - your phone keeps rebooting endlessly until you turn it off or throw it against the wall, there are a number of ways to get out of boot loop
 
Last edited:

decaturbob

Senior Member
Mar 30, 2011
2,492
842
Decatur
]After MDK firmware release, all subsequent phone bases do not have the loki exploit. Only custom recovery available is Safestrap

>>>>> You CAN NOT use goo manager, you CAN NOT load TWRP or CWM recoveries. <<<<<<


repeat
>>>>> You CAN NOT use goo manager, you CAN NOT load TWRP or CWM recoveries. <<<<<<

Only custom recovery available is Safestrap
 

decaturbob

Senior Member
Mar 30, 2011
2,492
842
Decatur
So you messed your phone up, what to do next?

As I have not messed a phone up, its a somewhat difficult for me to speak with knowledge on what needs to done. I do know you can odin back to your stock base, I know there is Kies. We will post links to the various Odin stock image files.
 

FernBch

Senior Member
The second and third posts mean if your VZW GS4 DID originally come with the MDK software build AND you DID NOT accept the OTA update you can install a custom recovery such as CWM or TWRP.

If you ACCEPTED the OTA or your GS4 came with ANY OTHER BUILD (ie ME7, MI1, MK2, etc) you are limited to Safestrap and Touchwiz.

You CANNOT downgrade to MDK. The new bootloader will NOT ALLOW IT.

Attempting to flash a custom recovery onto ANY build OTHER than MDK can cause SERIOUS issues with your device and MAY result in a BRICK.

Please read, read, read, before attempting any mods. The time you spend reading may save you a big headache.

OP, if this post is unnecessary you may delete or PM me and I will delete it.
 
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Surge1223

Recognized Contributor
Nov 6, 2012
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Google Pixel 6 Pro

CoMtnMan

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Nice job fellas, I wish I had had all this info in one spot when I started with this phone. It would have saved me a bunch of time and headache. :good:
 

Mistertac

Senior Member
Oct 22, 2013
4,759
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Springfield, Ma
What's your thoughts on adding links and info about installing Xposed Framework... I think that would help too

Possibly something regarding TiBu as well as that is something I see people not grasping... How to save data, apps, and freeze things like SDM if that's what they're going for.

Maybe I'm thinking too specifically about things but just throwing that out there. Good work!
Sent from my SCH-I545 using XDA Premium 4 mobile app
 
Last edited:

decaturbob

Senior Member
Mar 30, 2011
2,492
842
Decatur
What's your thoughts on adding links and info about installing Xposed Framework... I think that would help too

Possibly something regarding TiBu as well as that is something I see people not grasping... How to save data, apps, and freeze things like SDM if that's what they're going for.

Maybe I'm thinking too specifically about things but just throwing that out there. Good work!
Sent from my SCH-I545 using XDA Premium 4 mobile app

all information and links should be placed here in this thread. I can copy and past into my first post as needed.
 
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Icculus760

Senior Member
Jun 7, 2010
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OP Edit Suggestion

Original: "All revisions of the I545 after MDK (ME7, MI1, MJ7, MK2) can't NOT have a custom recovery, only Safestrap can be used"

Suggested Revision: "All revisions of the I545 after MDK (ME7, MI1, MJ7, MK2) can NOT have a custom recovery, only Safestrap can be used."

can't NOT = double negative
 

3aucla1r3

Senior Member
Dec 11, 2013
137
62
South Carolina
This is really a good thread. I includes all the things that I had to find out the hard way. I appreciate it.

I've followed all your suggestions/instructions except I flashed Hyperdrive RLS 12 SS version into the Stock slot instead of ROM Slot 1 because the latter messed up my storage space numbers and I kept getting a warning. Works great in Stock slot BTW.
 

Mistertac

Senior Member
Oct 22, 2013
4,759
2,749
Springfield, Ma
I think a simple guide, mostly for Safestrap users but useful for all, on how to save internal storage space would be helpful.

This would include :

Setting the Camera to save to external SD card.

Moving any music files over to external SD card and setting any music download apps to also save there.

Having your browser of choice save downloads to external SD card, whether through the browser itself or an app like ES File Manager which has a download manager that can do so.

Moving any apps that can be moved over to external SD card, and uninstall any apps that are not needed.

Lastly utilize apps like SD Maid to run regular scans and clean up unnecessary files/Cache, and Folder Mount to send even more things to external SD card.

Just an idea. I'm sure I can be forgetting something or wording something wrong, but the '' no more memory '' issue comes up quite A bit, like I said especially on SafeStrapped folks.




Sent from my SCH-I545 using XDA Premium 4 mobile app
 
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slightlys

Member
Feb 12, 2014
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1
Suggested Revision: "All revisions of the I545 after MDK (ME7, MI1, MJ7, MK2) can NOT have a custom recovery, only Safestrap can be used."

So just for clarification, You cannot use a custom recovery such as CWM to flash custom ROMs with (ME7, MI1, MJ7, MK2) firmware versions?
Is it just trying to flash with CWM that causes bricking?


The reason I ask is because, I installed CWM 6.0.4.4 on my S4(MK2) via Rom Manager. I then successfully booted the device into CWM recovery ( I didn't try to flash anything.) I then restarted my phone from the CWM recovery menu to the stock ROM all without any issues.
 
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decaturbob

Senior Member
Mar 30, 2011
2,492
842
Decatur
So just for clarification, You cannot use a custom recovery such as CWM to flash custom ROMs with (ME7, MI1, MJ7, MK2) firmware versions?
Is it just trying to flash with CWM that causes bricking?


The reason I ask is because, I installed CWM 6.0.4.4 on my S4(MK2) via Rom Manager. I then successfully booted the device into CWM recovery ( I didn't try to flash anything.) I then restarted my phone from the CWM recovery menu to the stock ROM all without any issues.

You can't install any roms...you will soft brick your phone.

Sent from my SCH-I545 using XDA Premium 4 mobile app
 

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  • 36
    To all:

    This thread will become a sticky with links to other informative threads concerning verizon S4 and what you need to understand in modifying the S4. Please do not post questions in this thread as this is a WIP. Please do not post comments in this thread. If you want to make a thread contribution, post links to information or an informative post please do.

    Clearly the S4 is one the most popular and effective phones available today. Many S4 owners wish to modify their phone with custom kernels and custom Roms. There are limitations on what you can and can't do with the S4 based on the firmware release of the phone. Modifying the phone involves risk which can end up costing the owner time and money to correct. The more people understand when it comes to the firmware limitations, ADB, Odin process the better prepared they are to minimize risk and the repetition of mistakes.

    >>>>Can KitKat NC5 be rooted?? A NEW native method of rooting NC5 if you took the OTA update is NOW AVAILABLE<<<<<

    >>>>[HOW TO] [ROOT] [APK] Root for NC5 OTA (All Kitkat devices) without PC!!!<<<<<
    http://xdaforums.com/showthread.php?t=2784138


    NC5 native root method (tower root) video by tomsgt/rootjunky
    https://www.youtube.com/watch?v=i3JOeQSvxD4

    >>>>Please note that the processes involving upgrading/downgrading must be followed as written. Also be sure to scan those threads for any additional information. I strongly urge to set up a check list. If you miss a step, you will have to start all over, you may soft brick your phone, you may turn your phone into a paperweight <<<<<

    [HOW-TO]Upgrade to 4.4.2 VRUFNC5 and keep root (for NC2 and MK2 devices) [05/13/2014]
    http://xdaforums.com/showthread.php?t=2726868 by surge1223


    4.x to 4.4.2 SAFE Up & Downgrade w Root n SafeStrap feat. 1File/Flash&Done!MK2-NC2/NC5
    http://xdaforums.com/showthread.php?t=2720163 by gigilie


    How I downgraded from NC5 OTA to MK2 and back to Rooted NC5!!! Complete Step-By-Step
    http://xdaforums.com/showthread.php?t=2763834 by techguy2002


    Helpful videos
    Verizon Galaxy S4**KitKat (NC5) Upgrade**With Root&Tethering
    http://www.youtube.com/watch?v=AIRoQKTLeJQ by Bobby Onesios

    Verizon Galaxy S4 KitKat**DOWNGRADE**to Jellybean
    https://www.youtube.com/watch?v=ZweIJrompdk&index=1&list=FLxv0tpwsgGZLKkTDHG1sC8A by Bobby Onesios

    Verizon Galaxy S4 Odin Restore and Unbrick
    http://www.youtube.com/watch?v=GL8XwuRYoWU&feature=youtu.be by tomsgt (rootjunky)


    Verizon Galaxy S4 Odin Restore and Unbrick
    All revisions of the I545 after MDK (ME7, MI1, MJ7, MK2) can NOT have a custom recovery, only Safestrap can be used.

    To locate your firmware version (build number) use Settings/More/About phone. Read the "Build number". The last 3 characters are how we describe what version your phone is using and why we always ask what build or base you have. Do not confuse this with the radio baseband.

    You can not flash to previous firmware releases.

    USB communication with S4 can be touchy, I recommend only using the samsung USB cable that was provided with the phone.

    All files downloaded need to be verified to their checksum MD5. There are free md5 checkers for windows. I strongly urge to download to PC and copy to extsd card.

    I do not have experience with MDK firmware based phones and the loki process for installing custom recoveries. I am sure we have plenty of people who do that can contribute to this sticky.

    Can someone explain to me what makes a rom safestrap compatible? What can I do to a rom to make it boot with safe strap?
    The ROM needs to be built to use the stock TouchWiz kernel that's on the phone, as Safestrap can't replace the kernel. (Flashing a non-Samsung kernel will set the "Knox Warranty Void" flag.) per k1mu


    "The number one reason people brick their Verizon Galaxy S4 phones is due to attempts to flash recovery using Goo Manager, dd, and other tools without understanding when those will or won't work. The Verizon S4 is very locked down, and will reject such attempts in most cases."
    k1mu

    Important to read this link first
    Customizing your Verizon Galaxy S4 - what's possible and what's not by k1mu
    http://xdaforums.com/showthread.php?p=48683964


    Custom Recovery for Verizon S4: Only MDK baseband!!!!! by k1mu
    http://xdaforums.com/showthread.php?t=2578569

    How to update from ME7 to MJ7, root, install safetrap and HD11 guide by decaturbob
    http://xdaforums.com/showthread.php?t=2579278


    [guide]how to use adb,ddms and take a logcat by Mr.Gentleman
    http://xdaforums.com/showthread.php?t=2304122

    [GUIDE] How to Enter ODIN and Recovery Modes on Verizon Galaxy S4 by open1your1eyes0;
    http://xdaforums.com/showthread.php?t=2290771

    [ROOT] Saferoot: Root for VRUEMJ7, MK2, and Android 4.3 by k1mu
    http://xdaforums.com/showthread.php?t=2565758

    [RECOVERY LOCKED] Safestrap Recovery v3.71 [2013-12-27 EXFAT Fix by hashcode
    http://xdaforums.com/showthread.php?t=2441441

    Safestrap 3.71 compatible 4.2/4.3 ROMS (work in progress)
    http://xdaforums.com/showthread.php?t=2630040

    Safestrap 3.72 compatible kitkat 4.4 ROMS (work in progress)
    http://xdaforums.com/showthread.php?t=2769389

    Informative thread by tomsgt with videos concerning rooting, loki, etc
    http://xdaforums.com/showthread.php?t=2337590

    Again, please do not post questions in this thread as this is a WIP. Please do not post comments in this thread. If you want to make a thread contribution for links to information or an informative post please do.
    8
    If our attempt is to reduce the amount of questions in Q&A then could post these as well? I constantly have to link these two posts in questions so I figure they'd be useful here.

    [MODEM][Zip] Modems for Loki'd & Safestrap roms (12/31/13)

    [ODIN][TAR] VRUEMK2 Emergency and No-Wipe Odin tars


    Sent from my SCH-I545 using XDA Premium 4 mobile app
    7
    I copied this from andriodforum post and give full credit to Nomorefear,


    ADB- Android Developers Bridge: The program used to talk to your phone and give it commands (USE IT ONLY IF YOU FEEL COMFORTABLE LEARNING)

    Root/Rooting- Getting the administrative control i.e, "hacking", "jailbreak", etc, etc...... Root is also defined as the base folder of your SD card. If you are told to place a file into root then this is what is meant. REMEMBER-root/rooting-admin control OR base folder on SD card. Please re read instructions you find in the forums throughly so that you may be able to save yourself some time and heartache.

    Superuser
    - program which gives authority for another program to have Root access. Program examples are "setcpu", "terminal emulator", "auto killer memory optimizer"

    Recovery- a useful tool that allows root users to flash roms, reinstall backups, and do many other fantastic things to help keep your phone from becoming a brick.

    Flash/flashing- the action of "installing" a file that isnt normally installed by conventional means i.e. flashing a rom, flashing a radio, flashing a kernel, etc etc. '/!\ WARNING: flash at your own risk and make sure you have over fifty percent battery and do not interrupt the flashing procedure. YOU HAVE BEEN WARNED!!!!!'

    Brick- making a device useless so that it is rendered a mass of uselessness i.e. PWNED, paperwieght, borked

    Terminal Emulator- a program which simulates ADB and basically is a way to communicate with the phone and provide a command language that is for upper eschelon (1337) users to helm.

    Nand/nandroid backup- In your recovery terminal there is an option to make a "Nand backup". This is a restore point or in gaming terms a save point. As most of us gamers know, if you save before you go further in the game and you make a poor choice then you can reset and go back to where you started. This is the same thing but for your phone

    Kernel
    Easiest way to put it: it is the thing that manages your system resources. This puppy can help make your phone run better and also overclock it.

    Overclocking Dont worry I wasnt gonna leave this term out. This is written for newbs so lets just say this is the term for making your phone run faster. IMPORTANT NOTE!!! Overclocking your phone too far can make it seize up or go into bootloops if done incorrectly! It can also make your phone run hot. BEWARE!!!!

    PRL Preferred Roaming List: This is just an updated list of what cellphone towers have been added to the system. This means better coverage when updated" - Nomorefear

    Here are some other definitions not covered by Nomorefear. For the following, I give credit to Wiki CMS Groupware (makers, I mean "developers" of Titanium Backup). I've also modified their stuff a bit. Link at end of post.

    More DEFINITIONS

    system app - A system app is an application that resides in /system/app/ and thus is technically a part of your ROM

    user app - is an application that resides either on the /data partition of your phone's internal memory or on your SD card

    system data - In the vast majority of cases, system data is simply the data that belongs to system apps or services.

    root - is the UNIX system administrator (UNIX is an operating system [OS] just as MicroSoft "Windows" is an OS)

    NAND locked (or "S-ON") device - is a device where the ROM (usually mounted at /system) is write-protected in hardware and thus cannot be modified, even if you have root privileges. Sometimes you get the illusion that you can write to /system, but in any case all changes will disappear after a reboot. This is why these devices often have "temp root" instead of permanent root". In order to get permanent root access, you need to make your device "NAND unlocked" (or "S-OFF") first. In other words, you need to "unlock the bootloader".

    shell - simply is a "command line" to type commands on your Android phone. If you're comfortable with typing on the phone then you can just use the ConnectBot (free) app or the Better Terminal (paid) app. If you want (or need) to type commands from a computer, just install the Android SDK, then enable "USB debugging" on your phone and finally, connect your phone through USB and type "adb shell" on your computer.

    Here is another definition from kejlyCZ (link at end).

    "ROM - is abbreviation for Read Only Memory. In this case, it's the part of the phone software, which is provided by manufacturer (operating system, basic built-in programs) and it's protected from deleting by user. It's the same like when you install Windows, the clean installation with no user data and user installed programs. In Android, ROM means the Android operating system. It can be the official ROM (updated by manufacturer) or unofficial ROM (AKA "Custom ROM) ('brewed' by community,.....

    And FINALLY (unless I edit later):

    Boot Loop or Boot Looping - your phone keeps rebooting endlessly until you turn it off or throw it against the wall, there are a number of ways to get out of boot loop
    7
    ]After MDK firmware release, all subsequent phone bases do not have the loki exploit. Only custom recovery available is Safestrap

    >>>>> You CAN NOT use goo manager, you CAN NOT load TWRP or CWM recoveries. <<<<<<


    repeat
    >>>>> You CAN NOT use goo manager, you CAN NOT load TWRP or CWM recoveries. <<<<<<

    Only custom recovery available is Safestrap
    7
    Well done, thread stuck! :highfive:

    ....all - let's keep this thread on topic for now, and offer any other helpful guides and links that contribute !