Develop Bugs

[Q] Problems with ROM flashings (i9195)

Hello everybody,
I have a quite stressful situation with my s4 mini right now and I need your expertise.
It goes like this:
I was perfectly happy with my stock rom but for some reason I got this crazy idea of rooting and installing a custom rom.
So I followed the steps on this post: http://forum.xda-developers.com/showthread.php?t=2364980
After CWM was installed and before the phone was rooted, I made a complete backup via CWM (Backup1) and then installed the rootkit (as mentioned on the above post). After successfully rooting it I made another backup (Backup2), you know, just in case
Then I followed the instructions on the CyanogenMod wiki (http://wiki.cyanogenmod.org/w/Install_CM_for_serranoltexx#Installing_CyanogenMod_from_recovery) and installed it on my phone. It worked perfectly and I had CyanogenMod installed. But after playing around with it a bit, I realized that I didn't like it that much for various reasons. So I decided to go back to my original ROM. So I restarted in recovery mode and restored Backup2. Well this is where the problems start
The phone would start but once it boot up everything kept crushing. I kept getting messages every 10 seconds that gapps is not responding and nova launcher is not responding and the play store is not responding, etc. And in general you couldn't use it. So I tried once again restarting in recovery mode and restored Backup1. But again the same thing. Everything kept crushing.
What I want now is to have my original stock rom rooted. Problem is, I don't know where to find it. All I found was this: http://forum.xda-developers.com/showthread.php?t=2375527&highlight=9195 but the download links don't work. Plus I don't know what my firmware's code is (eg I9195XXUAMF5)
Can anyone help?
PS. I live in Denmark and I bought here. Also the phone is the i9195 model with 8gb.

s4 mini
Go to CWM and wipe it or try to fix permissions

Factory reset from recovery should fix the force close.
Sammobile.com for firmwares
Sent from my GT-I9195 using xda app-developers app

mnezo said:
Factory reset from recovery should fix the force close.
Sammobile.com for firmwares
Sent from my GT-I9195 using xda app-developers app
Click to expand...
Click to collapse
Thanks! That helped a lot.
So now I downloaded and successfully flashed what Sammobile.com suggests is my stock firmware.
I followed again the procedure to root my phone (http://forum.xda-developers.com/showthread.php?t=2364980) but although superSU is installed, I don't think I have root access.
What happens is that first of all superSU says that it needs to update the binary but it when I click "continue" it fails to install. Then I get a security warning that superSU is trying to access protected files and that it was blocked. SuperSU asked me if I want to disable KNOX. I said yes so I don't get those messages anymore. But still superSU can't update.
The other thing is that the apps don't actually have root privilages. For example, when I try to enable root on ES File Explorer, I get the prompt to grant root access, and I select grant. But I still can't open specific folders in the file system. For example the /data folder is shown completely empty.
Also other apps don't behave like rooted.
Any thoughts??

flash GT-I9195_Kernel_v1.zip or Vikinger

mnezo said:
flash GT-I9195_Kernel_v1.zip or Vikinger
Click to expand...
Click to collapse
Thanks!
That worked
I hope that kernel doesn't have any bugs

Trying like hell to root this thing...

So far ive tried superoneclick... froze on step 7
tried manually installing superuser... couldnt verify.
tried installing a root zip... couldnt verify.
the only thing that claims to have worked is clockworkmod... except that it will NOT allow me access to any of the actual rooted functions.
i was able to download superuser (which you cannot download from google play unless rooted- that worked.)
trying to keep the OS on it now while being able to delete bloatware, for a friend.
is it purely impossible to root a stock rom? why can i install programs that requre root but i cannot use them for their intended purpose (rom manager says it cant find superuser in either of 2 locations).
what the heck am i missing?? ive been googling and trying methods for hours to no avail. cant boot into cwm recovery at all, by rom manager or from powered off (it goes into stock recovery.).
what else can i do?

Pawprints1986 said:
So far ive tried superoneclick... froze on step 7
tried manually installing superuser... couldnt verify.
tried installing a root zip... couldnt verify.
the only thing that claims to have worked is clockworkmod... except that it will NOT allow me access to any of the actual rooted functions.
i was able to download superuser (which you cannot download from google play unless rooted- that worked.)
trying to keep the OS on it now while being able to delete bloatware, for a friend.
is it purely impossible to root a stock rom? why can i install programs that requre root but i cannot use them for their intended purpose (rom manager says it cant find superuser in either of 2 locations).
what the heck am i missing?? ive been googling and trying methods for hours to no avail. cant boot into cwm recovery at all, by rom manager or from powered off (it goes into stock recovery.).
what else can i do?
Click to expand...
Click to collapse
What device do you have? There a several variations of the Tab 3.

gr8nole said:
What device do you have? There a several variations of the Tab 3.
Click to expand...
Click to collapse
in the model number it says sm-t210R
running android 4.1.2
build number jzo54k.t210euwamk1
she needs it back by sunday night so any help would be greatly appreciated

Pawprints1986 said:
in the model number it says sm-t210R
running android 4.1.2
build number jzo54k.t210euwamk1
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2433853

gr8nole said:
http://forum.xda-developers.com/showthread.php?t=2433853
Click to expand...
Click to collapse
saw that but cant use it as i cant get my system to boot in to CWM recovery, to flash a root zip, although it is installed.
cant flash zips with odin.
so im basically stuck.

Pawprints1986 said:
saw that but cant use it as i cant get my system to boot in to CWM recovery, to flash a root zip, although it is installed.
cant flash zips with odin.
so im basically stuck.
Click to expand...
Click to collapse
Did you watch the video in the CWM thread?
Tell me your steps EXACTLY and we'll figure it out.

Finally got it to work. i guess the magic step is not letting odin auto reboot. I was afraid not to let it because its not even mine. But, i followed the video in that thread exactly and that let my root zip install correctly.
phew!

Pawprints1986 said:
Finally got it to work. i guess the magic step is not letting odin auto reboot. I was afraid not to let it because its not even mine. But, i followed the video in that thread exactly and that let my root zip install correctly.
phew!
Click to expand...
Click to collapse
Well actually the guide say rem8ve the check mark of reboot. You most do it by your own.
Send from my SM-T210R (Rocket Tab Rom) using XDA HD Premium

[Q] Couple root questions

1. If I root my HTC One M8 with the stock rom, will I still get updates, or will I have to flash a rom everytime there is an update from HTC?
2. How can I manage folders and write to my microSD card once I root?
3. Once I root and unlock my bootloader do I have to flash a rom or will the stock one be automatically flashed? I want to remain stock just like the phone came out of the box, and get all my updates from HTC automatically. I just want to have the H/K audio enhancements and I want to be able to move things to my SD card. Thats the only reason I want to root. Any help in doing this is greatly appreciated. In fact, if someone helps me out greatly with a step-by-step by rooting,keeping stock,getting H/K, being able to write to sd, I will pay them $5 via Paypal if thats allowed here....

Oh, and I have the Unlocked version.

bhags8 said:
1. If I root my HTC One M8 with the stock rom, will I still get updates, or will I have to flash a rom everytime there is an update from HTC?
Click to expand...
Click to collapse
You will get updates.
bhags8 said:
2. How can I manage folders and write to my microSD card once I root?
Click to expand...
Click to collapse
Any root file explorer app should be fine. I use Es file explorer.
bhags8 said:
3. Once I root and unlock my bootloader do I have to flash a rom or will the stock one be automatically flashed? I want to remain stock just like the phone came out of the box, and get all my updates from HTC automatically. I just want to have the H/K audio enhancements and I want to be able to move things to my SD card. Thats the only reason I want to root. Any help in doing this is greatly appreciated. In fact, if someone helps me out greatly with a step-by-step by rooting,keeping stock,getting H/K, being able to write to sd, I will pay them $5 via Paypal if thats allowed here....
Click to expand...
Click to collapse
This question makes me believe you don't have much understanding of what rooting is and that means if something goes wrong, you will not be able to fix it. This is a dangerous. I strongly suggest doing some reading and trying to understand before you mess around (no I don't care to know how many devices you've rooted in the past). This is the only warning I will give you.
Unlock bootloader at HTCdev.com
boot to TWRP or Philz Touch (fastboot boot customrecoveryfilename.img)
Make a nandroid backup and save for just in case.
Install supersu or superuser (custom recovery should offer to install root for you, I know TWRP does, not sure about Philz Touch)
Firewater S-OFF (optional, extra dangerous, HK may not work without it.)
Install HK
Install a file explorer app capable of requesting root.
Good luck. I suggest reading the guide in my signature.

So if I flash twrp or the other one I won't flash a rom after that to keep stock right? Then if HTC pushes an ota update I would still receive it?
Sent from my HTC One_M8 using XDA Premium 4 mobile app

bhags8 said:
So if I flash twrp or the other one I won't flash a rom after that to keep stock right? Then if HTC pushes an ota update I would still receive it?
Sent from my HTC One_M8 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Correct. However, after you have everything like you want it, you will need to flash the original recovery back to your device. From what I understand, the OTA updates don't work with a custom recovery.
However, you should also consider that nearly every ROM in this forum will be updated within a few days anytime a new release is pushed. I can speak from personal experience that ARHD 5.5 is nearly identical to stock. It would only then require a weekly visit to his thread to see if a new release is out. Every other Sense based ROM here would be the same. Just mentioning that you do have alternatives.

Don't flash twrp. Just boot to it. Since you're not flashing roms, no point in flashing a custom recovery.
Sent from my HTC One_M8 using XDA Free mobile app

If I never flash a custom recovery do I still have to flash the original recovery?
Sent from my HTC One_M8 using XDA Premium 4 mobile app

Oh and do I have to get S-OFF for H/K and write to SD access??
Sent from my HTC One_M8 using XDA Premium 4 mobile app

bhags8 said:
Oh and do I have to get S-OFF for H/K and write to SD access??
Sent from my HTC One_M8 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
You don't need it for Sd card access
You might need it for HK as I stated earlier. If you don't understand why you might need it. read the thread I linked.

exad said:
Since you're not flashing roms, no point in flashing a custom recovery.
Click to expand...
Click to collapse
Intend to root my M8 but keep it in stock for the time being. So just rooting and booting into recovery to take backup.
I am a newbie so trying out the advantages of rooting and taking it one step at a time. As such Custom Roms are not my priority right now. Flexibility to OTA update is a priority, for which i have learnt that other than installing some basic root apps like titanium, if i decide to flash custom roms/recovery, overclock/undervolting, then i loose that flexibility.
1. Is my understanding correct?
2. I wanted to play around with xposed framework. Will installing xposed framework work against easy OTA updates?
3. Anything else i shouldn't be doing if i want easy OTA? I say easy because i do know that OTA can be achieved in a round about way even after flashing roms and all other customizations.

anjaan said:
Intend to root my M8 but keep it in stock for the time being. So just rooting and booting into recovery to take backup.
I am a newbie so trying out the advantages of rooting and taking it one step at a time. As such Custom Roms are not my priority right now. Flexibility to OTA update is a priority, for which i have learnt that other than installing some basic root apps like titanium, if i decide to flash custom roms/recovery, overclock/undervolting, then i loose that flexibility.
1. Is my understanding correct?
2. I wanted to play around with xposed framework. Will installing xposed framework work against easy OTA updates?
3. Anything else i shouldn't be doing if i want easy OTA? I say easy because i do know that OTA can be achieved in a round about way even after flashing roms and all other customizations.
Click to expand...
Click to collapse
1. yes
2. should still be able to receive OTA
3. Don't remove system apps. Use titanium backup to freeze if you don't want them running so you can unfreeze if needbe.
Tip 1
Make nandroids when you make changes so you can revert back, you can always boot into custom recovery to make and/or restore nandroids.
Tip 2
Always know how to undo what you're doing. If you don't have an undo plan, don't do it.

Hello Exad,
I am new to HTC and want to do all the necessary research before I root my phone. I have read your everything explained guide which was very helpful. As with the other users on this thread I want to gain root access but I do not want to run custom ROMs and I still want to receive OTA updates to my phone. It looks like simply booting into a custom recovery such TWRP and flashing supersu will enable root access without changing the stock recovery.
Can you explain how I boot into TWRP recovery without actually flashing it? It seems like every thread or guide I find online instructs me to flash a custom recovery. Where do I place the TWRP recovery file on my computer in order to boot into recovery?
Thank you for helping out a newbie

SouthBayBruin said:
Can you explain how I boot into TWRP recovery without actually flashing it? It seems like every thread or guide I find online instructs me to flash a custom recovery. Where do I place the TWRP recovery file on my computer in order to boot into recovery?
Click to expand...
Click to collapse
so long as you have fastboot available on your pc, , connect the phone in fastboot mode, then on the pc open a command prompt in teh folder where the recovery is(**), and issue teh command
Fastboot boot custom-recovery-name.img
that should boot you without flashing it.
** browse to the folder where it is in regular explorer, then hold shift and right click, there will be an 'open command prompt here' option in teh menu.

samsamuel said:
so long as you have fastboot available on your pc, , connect the phone in fastboot mode, then on the pc open a command prompt in teh folder where the recovery is(**), and issue teh command
Fastboot boot custom-recovery-name.img
that should boot you without flashing it.
** browse to the folder where it is in regular explorer, then hold shift and right click, there will be an 'open command prompt here' option in teh menu.
Click to expand...
Click to collapse
Thank you for the help.
If I am following correctly here are some basic steps I should follow. In order to get fastboot on my computer should I download the entire Google SDK from the google developer website. This file will then include everything I need on my computer in terms of fastboot. I should also ensure that I have all of the latest HTC one (m8) drivers installed on my computer.
Then I should download the latest version of TWRP and ensure that the file name is matches custom-recovery-name.img
I should enter fastboot mode on my phone and connect it to my computer. Following the command prompt, I will boot into TWRP recovery. Once in TWRP recovery can I disconnect my phone from the computer? I should first create a nandroid backup (as a precaution) then I should install supersu. Once I install supersu I should have root accress.
I just need to reboot my phone and it should still have the stock recovery but now with root access.
Thank you for the help

sorry, can't answer the SDK stuff, I didn't have to install any SDK, BUT it may have still been installed from when I used to flash my HD2 a few yrs ago, , or perhaps the drivers are installed when you first connect the phone in fastboot mode to teh PC?
Whichever, I certainly don't currently have the SDK installed, so it's either leftovers, or it comes with the drivers. (EDIT - i also have myphoneexplorer installed, which installs certain drivers and stuff too,,,)
try it, put the phone in fastboot, , connect it to usb, let windows install whatever drivers it feels, then open a command prompt on teh PC and type
fastboot
if it says unknown command, then its not there, if it gives you lots of lines of help info, then fastboot is installed.
Assuming it works (or once you get it working) change custom-recovery-name to say whatever your recovery is called, and it will boot the phone allowing you to perform all the normal actions. Whether or not it will allow SU to install, I don't know, i've only had the phone 2 days, and all i did was HTC bootloader unlock, flash twrp, install su, flash viperrom and done.

samsamuel said:
sorry, can't answer the SDK stuff, I didn't have to install any SDK, BUT it may have still been installed from when I used to flash my HD2 a few yrs ago, , or perhaps the drivers are installed when you first connect the phone in fastboot mode to teh PC?
Whichever, I certainly don't currently have the SDK installed, so it's either leftovers, or it comes with the drivers. (EDIT - i also have myphoneexplorer installed, which installs certain drivers and stuff too,,,)
try it, put the phone in fastboot, , connect it to usb, let windows install whatever drivers it feels, then open a command prompt on teh PC and type
fastboot
if it says unknown command, then its not there, if it gives you lots of lines of help info, then fastboot is installed.
Assuming it works (or once you get it working) change custom-recovery-name to say whatever your recovery is called, and it will boot the phone allowing you to perform all the normal actions. Whether or not it will allow SU to install, I don't know, i've only had the phone 2 days, and all i did was HTC bootloader unlock, flash twrp, install su, flash viperrom and done.
Click to expand...
Click to collapse
Thank you for the advice. I have rooted one other phone in the past and I remember using adb commands, so my computer may already have fastboot enabled.
Since I do not want to flash the custom recovery and only boot into recovery will I need to keep the phone connected to my computer while in TWRP recovery?

why would you need to unhook it? play it safe and leave it connected.

I have been using this method to boot into TWRP to re-install SuperSU after each HTC ONE M8 update. However, with the update just released (Android 4.4.3), when I issue the command it just has the phone reboot. It does not bring up TWRP. Any ideas?

[Q] HELP root fail

I cannot gain root access for some strange reason. No, not a noob here, very familiar with rooting. Problem is... the Superuser won't flash. I got recovery installed... tried both CWM & TWRP. Either way when I try flashing SU app it doesn't work. I reboot phone and no app installed. In TWRP it actually has a little red word that says "Failed" after I try flashing SU.
Everywhere I look on the internet about rooting all say to flash an SU. So WTF? Why can't I do that?
Any other way to get root access? And then perhaps manually install SU from play store? Other ideas?
Need this damn phone rooted... driving me crazy.

jones75534 said:
I cannot gain root access for some strange reason. No, not a noob here, very familiar with rooting. Problem is... the Superuser won't flash. I got recovery installed... tried both CWM & TWRP. Either way when I try flashing SU app it doesn't work. I reboot phone and no app installed. In TWRP it actually has a little red word that says "Failed" after I try flashing SU.
Everywhere I look on the internet about rooting all say to flash an SU. So WTF? Why can't I do that?
Any other way to get root access? And then perhaps manually install SU from play store? Other ideas?
Need this damn phone rooted... driving me crazy.
Click to expand...
Click to collapse
Boot into TWRP recovery. Do not flash anything. Click reboot >> Reboot System. It will ask if you want to install SU. Click yes. Done!
Sent from my SAMSUNG-SGH-T989 using XDA Free mobile app

jrc2 said:
Boot into TWRP recovery. Do not flash anything. Click reboot >> Reboot System. It will ask if you want to install SU. Click yes. Done!
Sent from my SAMSUNG-SGH-T989 using XDA Free mobile app
Click to expand...
Click to collapse
Thanks for chiming in man. Actually definitely tried that several times. Anyways thought I would jump back on and post an update and see if it catches anyone's eye. Here's a summary: I'm still rootless; Everything I install in Odin works correctly; Anything I try to install via recovery (i.e. zips in CWM/TWRP) fails in one way or another.
To put it simply, the only way I can foresee my phone being successfully rooted is if I can do it via Odin. I have searched quite a bit online and have found no way to root the phone with Odin. Every method involves using a recovery. If someone could do me a favor and create a pre-rooted tar I could probably succeed. I will note in closing I was able to successfully update to UVMC6.... using Odin of course.... and it makes this phone more bareable, but not being rooted is still just killing me. First phone I've owned in 4 years I haven't been able to root.........
Anyone?

One more thing......
The more I think about this problem, seems to me there is something fundamentally wrong with this device I'm trying to root. No idea what the problem is, but has to be major for both recoveries to install correctly but be unable to flash anything successfully.... too strange to be a minor problem or user error I surmise. That leads me to my next question:
Is this whole thread better suited elsewhere? Is there a sort of technical help forum area where I could get more help with diagnosing the problem? Hell, I even thought about posting a reply in the thread of a popular rom explaining how I'm unable to install it to see if anyone could help me out. I could care less at this point if I'm running stock or custom rom just need the damn phone rooted.
What do folks think about my question above? Does this thread make more sense somewhere else?
Thanks & Cheers,

I think I've just ruined my tablet while trying to root.

Okay, so I'm fairly new to this rooting scene, but I'm an Android veteran already. I've just used Chainfire's CF-Auto-Root on my tablet (P5220 running 4.2.2. Everything was correct.), and I forgot to check the Auto Reboot box in Odin. I then proceeded to hard shut down it, because Odin said reset on the UI. Cool. I turn it on. Now I got stuck on the Samsung Galaxy Tab 3 boot logo. I got worried. I then hard shut it down again by holding the power button, then I turn it on again. Now it's still stuck on the Samsung Galaxy Tab 3 logo. I'm scared I just bricked my tablet by trying to root it. I'm so stuffed.
Can anyone help me? This is my school tablet as well, and I'm basically ruined if it's dead.
UPDATE: Okay, I've rebooted into Download Mode, retried flashing the root with Auto-Reboot on, succeeded, and now I'm stuck on that blasted Samsung Galaxy Tab 3 screen again.

Vin,
in recovery , perform a factory reset. If you are still looping , restore your working backup which you made of course ! ...?
Instead flash the appropriate supersu zip for your device and android version.
m

moonbutt74 said:
Vin,
in recovery , perform a factory reset. If you are still looping , restore your working backup which you made of course ! ...?
Instead flash the appropriate supersu zip for your device and android version.
m
Click to expand...
Click to collapse
I can't access my recovery. At all. And I was not informed of making a recovery backup...

vin_ said:
I can't access my recovery. At all. And I was not informed of making a recovery backup...
Click to expand...
Click to collapse
OUCH, okay I am only aware of my Philz build for the gt-p5220 [link below]
Philz-gt-p5220.tar
https://www.androidfilehost.com/?fid=24052804347818464
Flash in Odin with auto restart UNCHECKED. when flash is done [res-ok] force reboot to recovery.
Search forum for correct supersu or get current supersu from chainfire's thread for KK with x86 support
DO NOT USE BUILT IN ROOTING FUNCTION FROM RECOVERY! FLASH SUPERSU ZIP INSTEAD !
also ask @nels83 if he can get a current recovery build for your tab if there isn't one already.
You may need to un-root manually while in recovery mode and using adb shell.
If so give me a shout here and i'll try to walk you through it.
m
@vin_
Edit - http://forum.xda-developers.com/showpost.php?p=60542479&postcount=2 nels83 's recovery builds

moonbutt74 said:
OUCH, okay I am only aware of my Philz build for the gt-p5220 [link below]
Philz-gt-p5220.tar
https://www.androidfilehost.com/?fid=24052804347818464
Flash in Odin with auto restart UNCHECKED. when flash is done [res-ok] force reboot to recovery.
Search forum for correct supersu or get current supersu from chainfire's thread for KK with x86 support
DO NOT USE BUILT IN ROOTING FUNCTION FROM RECOVERY! FLASH SUPERSU ZIP INSTEAD !
also ask @nels83 if he can get a current recovery build for your tab if there isn't one already.
You may need to un-root manually while in recovery mode and using adb shell.
If so give me a shout here and i'll try to walk you through it.
m
@vin_
Edit - http://forum.xda-developers.com/showpost.php?p=60542479&postcount=2 nels83 's recovery builds
Click to expand...
Click to collapse
Okay, I've got PhilZ Touch working. Now what? (I'm totally new to this kind of stuff, by the way.)
UPDATE: VICTORY! MY BABY'S ALIVE!
Okay, so what I did, was to navigate PhilZ Touch, and I cleared my Dalvik Cache. I then opted to reboot, it notified me that the ROM would overwrite PhilZ, I said, OK cool, fix it. It then told me root access is missing/broken and I told it to NOT root for me. Now it's rebooted, and I'm going to check if it's properly rooted. I'll keep this updated.
UPDATE 2: Not rooted. Sherbet. ALRIGHTY THEN. I'm going to flash that SuperSU zip now. Wish me luck, and for the love of all things technological, please don't go wrong...
UPDATE 3: For f***'s sake. My ROM is incredibly stubborn and -- what's that? The Superuser request? Grant! Re-verify! Rooted! Thanks a bunch dude, you've been super helpful.

@vin_
OK good deal :good:
I CANNOT BELIEVE you said Sherbet in a public forum !!!!!!
Aww ****, now i said it too.... :silly:
m
xD

@moonbutt74
It worked. Thanks so much dude. I literally can't thank you enough. AND I'm typing this straight from my tablet. Any good root apps?

vin_ said:
@moonbutt74
It worked. Thanks so much dude. I literally can't thank you enough. AND I'm typing this straight from my tablet. Any good root apps?
Click to expand...
Click to collapse
I don't really know. Make sure you have busybox installed. Anything else kind of depends on what your needs are and what's available to/for your device's architecture.
When i still had my gt-p5210 santos10wifi, i had supersu, busybox and sdmaid and a chroot setup for compiling smaller projects and working through adb shell.
m

vin_ said:
@moonbutt74
It worked. Thanks so much dude. I literally can't thank you enough. AND I'm typing this straight from my tablet. Any good root apps?
Click to expand...
Click to collapse
moonbutt74 said:
I don't really know. Make sure you have busybox installed. Anything else kind of depends on what your needs are and what's available to/for your device's architecture.
When i still had my gt-p5210 santos10wifi, i had supersu, busybox and sdmaid and a chroot setup for compiling smaller projects and working through adb shell.
m
Click to expand...
Click to collapse
There's the Xposed framework. It allows you to use modules that can do many different things. I'm sure you've heard of it.
Search up Xposed Installer and download the APK. I would provide the link, but XDA won't let me, as I have made less than 10 posts.
You can find modules on the Play Store.
Also on the Play Store, you can find Pimp My ROM, which allows you to modify your device in cool ways. I'm sure you've also heard of that to.
It's free.
And of course, there are mods you can flash in recovery.
There's plenty more root stuff, even in "normal" applications. For example:
If granted root permission, ES File Explorer will let you explore the root of the system.
Nova Launcher also has extra features when granted root access.
And then there is Freedom at in-appstore . com.
Freedom allows you to get in-app purchases for free. However, this is piracy, so install at your own risk.