yashsingh1/xdaforums huggingface dataset:
[Galaxy S 4 i9500 Android Development] vishal thakar:
=>MM:-

https://drive.google.com/file/d/0ByZzA_jcaXIxUXRBQU9SYTNXVEk/view?usp=docslist_api

=>LL:-

https://drive.google.com/file/d/0ByZzA_jcaXIxZUFCWE1SZXZJRFE/view?usp=docslist_api
[Galaxy S 4 i9500 Android Development] vishal thakar:
Governor alucard

Cpu gpu voltage decrease 100mv

Remove tick mark *gpu state wakeup locking*

Gpu maximum 350mhz
[Galaxy S 4 i9500 Android Development] vishal thakar:
Link sharing fix...
[Galaxy S 4 i9500 Android Development] jitendra purohit:
Ver 4 isn't available for mokee rom??
[Galaxy S 4 i9500 Android Development] vishal thakar:
Not now...

But i will do in two days.
[Galaxy S 4 i9500 Android Development] jitendra purohit:
Ty [emoji2]
[Galaxy S 4 i9500 Android Development] joshua764:
where the voltage is changed drecease 100mv?

Enviado desde mi GT-I9500 mediante Tapatalk
[Galaxy S 4 i9500 Android Development] id0620:
for v4 still need to flash su zip ??
[Galaxy S 4 i9500 Android Development] MoreTissues:
Not needed...mate...just flash through recovery will do
[Galaxy S 4 i9500 Android Development] vishal thakar:
For gpu voltage use synapses>gpu

For cpu voltage use kernel adiutor > voltages
[Galaxy S 4 i9500 Android Development] vishal thakar:
If you face any su related problem then flash su.zip

Otherwise its not require
[Galaxy S 4 i9500 Android Development] vishal thakar:
Mokee update to version 4

Check op
[Galaxy S 4 i9500 Android Development] MostaphaHida:
flashed and testing so far awesome kernel and yea better performance i hope the same for batterylife ,made a geekbench test and there is also more score than stock cm12.1 kernel. Thanks
[Galaxy S 4 i9500 Android Development] id0620:
when I call someone, sound that I hear is too loud can I fix it ??
[Galaxy S 4 i9500 Android Development] MostaphaHida:
I think u may decrease the earpiece volume from synapse
[Galaxy S 4 i9500 Android Development] id0620:
yeah yeah thanks I do this right here but forgot that I did but 1 question how to increase speaker volume ??
[Galaxy S 4 i9500 Android Development] MostaphaHida:
Increase slider of main speaker top of earpiece.
[Galaxy S 4 i9500 Android Development] Spriz:
Sorry guys, but that recovery is the gear ?? .. can not find it .. I use TWRP and I can not install the kernel ... use today's update of CM13 stock
[Galaxy S 4 i9500 Android Development] juancruzariatis:
Here! ?

https://www.androidfilehost.com/?w=files&flid=50384
[Galaxy S 4 i9500 Android Development] MostaphaHida:
flashed on gearCM latest build and couldn't boot probably stuck at boot loading logo is this kernel compatible with gearcm any way ?
[Galaxy S 4 i9500 Android Development] vishal thakar:
Yes it's totally compatible with gear cm 13.

I also use latest build and its working fine.

May be problem with recovery read old post you will get solution.
[Galaxy S 4 i9500 Android Development] MostaphaHida:
Im using gearCM recovery once i flash the kernel im stuck latest build of gearcm im using is 5/30 any solutions ?
[Galaxy S 4 i9500 Android Development] MoreTissues:
Use twrp 2.8.7 or unzip the kernel.zip and flash only boot.img
[Galaxy S 4 i9500 Android Development] vishal thakar:
I am also use this build. All working fine.

Extract. Zip file and

U can flash boot.img using recovery or flashify.
[Galaxy S 4 i9500 Android Development] Spriz:
​

thanks ... but I have the i9505 model, and this recovery is not compatible .. :(
[Galaxy S 4 i9500 Android Development] zozoz13:
Then you're in the wrong section. This kernel only for I9500 variant.
[Galaxy S 4 i9500 Android Development] yesh8352:
Flashing kernel on 5/30 build im loosing ROOT... In developer option i dont see ROOT ACCESS, so i flashed SUPER SU the app says no binary installed.
[Galaxy S 4 i9500 Android Development] gp545:
Uninstall SuperSu if it's installed in /system directory and install SuperSu app from Play Store.. Then flash SuperSu Zip.. Root will be restored..
[Galaxy S 4 i9500 Android Development] jack9394:
tried v4 on mokee and yet no synapse support
[Galaxy S 4 i9500 Android Development] Mr.Virus00:
How to install??? please help me..i'm new.. and what to install??

Viruskernal.7z??? or mm/ll??:D:o
[Galaxy S 4 i9500 Android Development] Mr.Virus00:
same thing happened for me :confused:
[Galaxy S 4 i9500 Android Development] kushfighter2:
maybe something here
[Galaxy S 4 i9500 Android Development] Mr.Virus00:
Thank You !!:):good::fingers-crossed:
[Galaxy S 4 i9500 Android Development] Mr.Virus00:
Yes.
[Galaxy S 4 i9500 Android Development] kushfighter2:
welcome ! :) :)
[Galaxy S 4 i9500 Android Development] Mr.Virus00:
Can i use it on RR rom?
[Galaxy S 4 i9500 Android Development] jitendra purohit:
Yup. Rr is based on cm so u can use it on rr.
[Galaxy S 4 i9500 Android Development] MostaphaHida:
there's a problem with sound after some hrs of using then sound starts to get distortion and getting weird so i have to restart my phone to fix that then after some hrs the same thing happens again otherwise thsi kernel is perfect.

im using CM 12.1 is there any fix for that ?
[Galaxy S 4 i9500 Android Development] zozoz13:
I had this problem too. Sound distorted a little bit while playing music and video. Quite often in periods that are unpredictable. I had this problem in Official & Gear CM12. Never test it in GearCM13 though.

Sent from my Galaxy S4
[Galaxy S 4 i9500 Android Development] kaankkaraman:
Different ramdisk, you Will stuck on bootlop
[Galaxy S 4 i9500 Android Development] MostaphaHida:
It's perfect in gear cm 13 but I'm not using this rom any more as i got better sot on official 12.1 about 4hrs and 10mins. Any way i hope if there is any way to fix this problem.
[Galaxy S 4 i9500 Android Development] mash20:
[MENTION=6044543]vishal thakar[/MENTION]

Can you fix red words in synapse

and add these tabs in synapse :

-LMK (to edit LMK values)

-CPU Voltage control

-CPU(for underclock)

-CPU Governor (to change governor)

-memory

and can you add PEWQ (Power efficient worqueues)
[Galaxy S 4 i9500 Android Development] vishal thakar:
Its better to use kernel adiutor for ui and selection for cpu freq,voltage, lwk

I tried that but not feel good so i removed it.
[Galaxy S 4 i9500 Android Development] mash20:
Yes, kernel aduitor is good but if you add these tabs in synapse it will be easy to control and simple (to use one kernel control app)
[Galaxy S 4 i9500 Android Development] mash20:
[MENTION=6044543]vishal thakar[/MENTION]

It will be great if you add these tabs and i will be thankful if you add it :)
[Galaxy S 4 i9500 Android Development] rebel1735:
Hey can someone clarify on the audio quality? Is it anywhere close to in call audio quality on the stock rom?
[Galaxy S 4 i9500 Android Development] vishal thakar:
Disable sound equalizer in synapses audio tab...

You can modify audio quality as you like using synapses.
[Galaxy S 4 i9500 Android Development] vishal thakar:
Update

Black edition MM 5

*improve performance

*patch to kernel lz compration

*lock screen patch

*reduce wake lock

*many more

Clean kernel app data other wise you get random reboot

Its only for MM.i will update LL as soon as possible.

No lag if you select maximum freq 300mhz ? for battery lover

Click on thanks button if you like my work
[Galaxy S 4 i9500 Android Development] Mr.Virus00:
Bootloop happening after flashing MM on RR rom :(
[Galaxy S 4 i9500 Android Development] zozoz13:
No support for RR MM (yet) by this kernel.
[Galaxy S 4 i9500 Android Development] mash20:
Latest update is not stable if I underclock

and these frequencies not work
[Galaxy S 4 i9500 Android Development] vishal thakar:
i will check and fix that

thanks for your feedback
[Galaxy S 4 i9500 Android Development] jack9394:
with this update does MM battery drain because of wifi is fixed?
[Galaxy S 4 i9500 Android Development] vishal thakar:
i will in next update.
[Galaxy S 4 i9500 Android Development] mash20:
Thanks very much

And I think the random reboots in latest build it cause by pegasusq governor of I change this governor the reboots is gone

and I fix low frequencies I

echo 100000 /sys/devices/system/cpu/cpufreq/iks-cpufreq/min_freq
[Galaxy S 4 i9500 Android Development] aboodyaiman:
I know RR is not supported yet, but all your kernels starting from the test ones till BlackEdition 4 was working fine with RR 5.6.5.

BlackEdition 5 freezes and gives random reboot and eventually bootloop, could you look into it?
[Galaxy S 4 i9500 Android Development] vishal thakar:
First take full backup then clean kernel adiutor app data and synapses app data.

Then flash v5

Because version 5 is totally different to v4 (loats of modification )

Try n report
[Galaxy S 4 i9500 Android Development] vishal thakar:
Flash fix wifi for wifi battery drain.
[Galaxy S 4 i9500 Android Development] vishal thakar:
https://drive.google.com/file/d/0ByZzA_jcaXIxQWNTQlQ3bHBzZ2c/view?usp=docslist_api

Flash this for wifi

Wakelock battery drain fix
[Galaxy S 4 i9500 Android Development] vishal thakar:
Which governor you use?
[Galaxy S 4 i9500 Android Development] mash20:
when my phone boot the default governor was pegasusq and it was not stable with my settings

now I change it to ondemand and everything is perfect now
[Galaxy S 4 i9500 Android Development] jack9394:
okay i'll try and report
[Galaxy S 4 i9500 Android Development] jitendra purohit:
Rr marshmallow [emoji15] [emoji15] ??
[Galaxy S 4 i9500 Android Development] vishal thakar:
I will remove in next update or modify for stable.
[Galaxy S 4 i9500 Android Development] vishal thakar:
Its Unofficial RR mate.
[Galaxy S 4 i9500 Android Development] jitendra purohit:
Please provide link of thread.
[Galaxy S 4 i9500 Android Development] MostaphaHida:
Should i apply this settings or do i keep cancelling every time i open app ?
[Galaxy S 4 i9500 Android Development] vishal thakar:
Click on uper right side 3 dots and disable apply on boot.

After every boot click on X then synapses set your custom value as you set in last boot.
[Galaxy S 4 i9500 Android Development] vishal thakar:
http://xdaforums.com/showthread.php?t=3345407
[Galaxy S 4 i9500 Android Development] MostaphaHida:
Thanks for reply..i wanted to ask about another thing do i need to download virus script config ?
[Galaxy S 4 i9500 Android Development] vishal thakar:
Some patch available in virus script confing like disable hotplug,gpu maximum freq.

I don't think to download that...u can customize kernel setting using synapses.
[Galaxy S 4 i9500 Android Development] lucasromero-:
any reviews?
[Galaxy S 4 i9500 Android Development] jack9394:
v5 is not good, the phone freezes and reboot every time :( gcm13

this is the first version that cause random reboots for me :( so back to v4
[Galaxy S 4 i9500 Android Development] vishal thakar:
Change governor

Pegasesq is unstable.

I will fix that
[Galaxy S 4 i9500 Android Development] lucasromero-:
I try different governor, different gpu freq, different cpu freq min and max and the same.. reboot and freeze every 10 or 5 min. with MM RR 5.6.5
[Galaxy S 4 i9500 Android Development] vishal thakar:
Update:-

black edition mm/ll 5.1

*deadline i/o improve for performance

*fix rendom reboot

*remove uc and oc of cpu

*synapse update

If you like my work,click on thanks button.
[Galaxy S 4 i9500 Android Development] vishal thakar:
Now it's fix...try new version
[Galaxy S 4 i9500 Android Development] lucasromero-:
Ok, i'm gonna tested. i'll give you a feedback about the performance :good:
[Galaxy S 4 i9500 Android Development] vishal thakar:
Are you use RR ???
[Galaxy S 4 i9500 Android Development] D4rk_Seraph:
Link for LL 5.1 please?
[Galaxy S 4 i9500 Android Development] vishal thakar:
Not update yet. ..

I will upload at night
[Galaxy S 4 i9500 Android Development] vishal thakar:
Update LL to v5.1
[Galaxy S 4 i9500 Android Development] lucasromero-:
yes i'm on MM RR 5.6.5 , all governor tested working fine until now. with synapse. Max Freq 1200 and Min 500. hot plug 300. just one freeze watching a video.. but the rest is working.
[Galaxy S 4 i9500 Android Development] jack9394:
i was using onDemand
[Galaxy S 4 i9500 Android Development] vishal thakar:
Sound like good.
[Galaxy S 4 i9500 Android Development] aboodyaiman:
Same here, everything is snappy except Synapse, kinda laggy, A7 max freq is forced to 12000 and Ondemand governor is not tune-able.

Good work tho, best kernel after arter97 ones :p
[Galaxy S 4 i9500 Android Development] darkilong:
hi could you make the download part more informative? i will flash R&R but i dont know which to dl for it. do i need all? tia
[Galaxy S 4 i9500 Android Development] vishal thakar:
If you using RR lollipop (cm12.1) version then flash LL kernel and you use MM (android 6) (cm13) then flash MM version of kernel
[Galaxy S 4 i9500 Android Development] afaquekhaja:
What settings do you recommend for max battery life in cm13?
[Galaxy S 4 i9500 Android Development] vishal thakar:
Under clock gpu 350, under volt -100mv of gpu ,remove tick of gpu wakeup state locking

Under clock cpu 600-1000 mhz, under volt -100 mv , governor alucard
[Galaxy S 4 i9500 Android Development] vishal thakar:
Thanks for your compliment

I will try my best for make best. ?
[Galaxy S 4 i9500 Android Development] darkilong:
Hello, Thank you for the confirmation, by the way any idea why I am getting an error with the gapps with the RR after flashing it? getting a has stopped working on all gapps ( I do not know which version to download in the RR page. I am using the 6.5.6 version
[Galaxy S 4 i9500 Android Development] D4rk_Seraph:
I installed the LL v5.1 kernel in the latest CM 12.1 nightly version (19/06) and now when I press the button to turn on the display, the device hangs and restarts. I reinstalled the kernel but the problem continued.
[Galaxy S 4 i9500 Android Development] vishal thakar:
Clean kernel app data,synapse app data and clean catch partition if it's not work then provide me log for that.
[Galaxy S 4 i9500 Android Development] vishal thakar:
Wait...new version coming ?
[Galaxy S 4 i9500 Android Development] darkilong:
I will update to it, I just need a working rom right now, any idea what version of gapps should I download? I didn't change any settings when I download it from the website. this is the only thing I can think why it is crashing.
[Galaxy S 4 i9500 Android Development] D4rk_Seraph:
The device works normally until the time the screen turns off. When I press the button to turn on the display, the device hangs and restarts. I have attached the last_dmesg file, hope it helps.

And how do I do this kernel app data wipe in recovery mode?
[Galaxy S 4 i9500 Android Development] vishal thakar:
I Never used gapp ?
[Galaxy S 4 i9500 Android Development] vishal thakar:
Not in recovery

Just clean data of kernel adiutor and synapse

And wipe only catch partition
[Galaxy S 4 i9500 Android Development] lucasromero-:
i use the last version of gapps and the pico one. and working fine with MM RR 5.6.5 and virus kernel 5.1. try that and let us know :) [MENTION=5273090]darkilong[/MENTION]
[Galaxy S 4 i9500 Android Development] D4rk_Seraph:
I did the data cleaning of Auditor Kernel and Synapse and wiped cache partition, but the problem continued.
[Galaxy S 4 i9500 Android Development] darkilong:
what did you choose from the platform and android? and is there a way for me to customize which to install?

---------- Post added at 06:16 PM ---------- Previous post was at 06:15 PM ----------

what do you use to install apps then?
[Galaxy S 4 i9500 Android Development] lucasromero-:
Choose like this, and download. then flash via recovery, i recommend use the last gear cm recovery.
[Galaxy S 4 i9500 Android Development] darkilong:
thanks, but what is this gear cm recovery? i am using philz touch
[Galaxy S 4 i9500 Android Development] lucasromero-:
flash this in your philz recovery, then reboot to recovery again, gearm cm recovery based on TWRP should boot now. :good:
[Galaxy S 4 i9500 Android Development] darkilong:
thank you, i tried it and i am sti getting the error. unfortunately, google play services has stopped working and unfortunately, setup has stopped working. any idea?
[Galaxy S 4 i9500 Android Development] lucasromero-:
what ROM do you have? is clean flash? or dirty one? try to flash all over again. start with the ROM.
[Galaxy S 4 i9500 Android Development] vishal thakar:
Ok

I will fix that.

U can use old version.
[Galaxy S 4 i9500 Android Development] D4rk_Seraph:
Thanks!
[Galaxy S 4 i9500 Android Development] darkilong:
i am not sure what i am doing wrong, and this time whenever i flash something from recovery the phone reboots.

here are the things i did, using philz touch, i chose the install new rom (i do this everytime when flashing a new rom) then flash RR, was able to finish it but stuck in boot loop. so followed the same steps and flashed 2 other roms, infernus and halcycon (used these roms before) however before finishing the installation the phone reboots.

next step i flashed twrp via odin (success) and flashed the latest version via twrp recovery. guess what same problem, with RR it is stuck in boot loop while with other roms, it does not complete the installation. this thing never happened to me.

next step i used this adb thing and i believe it is successful, however same problem persists.

the only thing i can think of is to flash the original i9500 firmware which i am downloading right now and will flash it via odin.

any input would really help. TIA
[Galaxy S 4 i9500 Android Development] MostaphaHida:
Confirmed same thing happened with me !
[Galaxy S 4 i9500 Android Development] vishal thakar:
Remove sd card for RR rom while booting
[Galaxy S 4 i9500 Android Development] vishal thakar:
Working on it...wait few day

I will update
[Galaxy S 4 i9500 Android Development] vishal thakar:
Yes...
[Galaxy S 4 i9500 Android Development] vishal thakar:
Try my best

Currently i have limited mobile data plan so....
[Galaxy S 4 i9500 Android Development] invincible authority:
I can provide you with "boot.img" of the ROM if that is what you need!
[Galaxy S 4 i9500 Android Development] joshua764:
an update that allows us to raise the frequency of the CPU?

Enviado desde mi GT-I9500 mediante Tapatalk
[Galaxy S 4 i9500 Android Development] Aayan 123:
Camera issue has been resolved ages ago
[Galaxy S 4 i9500 Android Development] hakfur5328:
Can you add overclock for next version?
[Galaxy S 4 i9500 Android Development] vishal thakar:
i think 1.6 ghz is enough for play any HD games.
[Galaxy S 4 i9500 Android Development] vishal thakar:
Try my best :o
[Galaxy S 4 i9500 Android Development] vishal thakar:
Update to version 2
[Galaxy S 4 i9500 Android Development] Eddie_53:
I read some times that sabermos toolchain is best for battery... I'll test rhe kernel today o/
[Galaxy S 4 i9500 Android Development] vishal thakar:
Point to be noted :)

Thanks for suggestion
[Galaxy S 4 i9500 Android Development] joshua764:
yesterday install kernel version 2. I have not had reboots. battery consumption is already lower. I keep trying.

thanks for your job. I hope not abandon

Enviado desde mi GT-I9500 mediante Tapatalk
[Galaxy S 4 i9500 Android Development] LEANDROMENDES:
now lack the CyanogenMod release the CM13 for s4 i9500
[Galaxy S 4 i9500 Android Development] vishal thakar:
Yup

Almost stable

No blue tint problem

Reduce battery 2% in 5 hours (in deepsleep)

I m working on arrow hotplug for best battery life..
[Galaxy S 4 i9500 Android Development] vishal thakar:
Unofficial cm13 and unofficial RR available (almost bug fix)
[Galaxy S 4 i9500 Android Development] joshua764:
super. thanks for your work. I will closely follow your work. hug

Enviado desde mi GT-I9500 mediante Tapatalk
[Galaxy S 4 i9500 Android Development] jmwuxtfz:
test！
[Galaxy S 4 i9500 Android Development] vishal thakar:
Update to v2.1

Check OP for more details and profile of zzmoove
[Galaxy S 4 i9500 Android Development] cmglng:
Tried Google Camera latest build for MM only with RR 5.6.5. It crashes when I try to record a video.
[Galaxy S 4 i9500 Android Development] husseinholmes:
Try to restart your phone and tell me if it's working because I experienced that before and after i restarted all working fine.
[Galaxy S 4 i9500 Android Development] MostaphaHida:
Take ur time, thanks mate :)
[Galaxy S 4 i9500 Android Development] darkilong:
it didnt work :( i also flashed stock firmware via odin, still bootloop. im out of ideas:(
[Galaxy S 4 i9500 Android Development] aboodyaiman:
There's a thread by me on S4 general discussion named 11GB reverting to 8GB

Try the steps there and it will work.
[Galaxy S 4 i9500 Android Development] darkilong:
will it work even if i didnt switch from 8gb to 11gb? and any link for the modem?
[Galaxy S 4 i9500 Android Development] aboodyaiman:
It will wipe the whole thing in your device, like a new one.
[Galaxy S 4 i9500 Android Development] darkilong:
and any link for the modem? i am confused what to use

okay just to clear things

1. a bootloader file that has param.bin as BL in odin - i downloaded the one from your thread - goes to bootloader in odin

2. TWRP recovery as AP - i have this one and it goes in PDA in odin

3. a modem as CP - i dont have this yet, and as CP meaning phone in odin? i am using the 3.07 version

4. JA3G_EUR_OPEN.pit as 8GB pit - where do i get this one?
[Galaxy S 4 i9500 Android Development] aboodyaiman:
https://mega.nz/#!g9wRyZiY!Rx0ZlZ4UQa4zgbMZGuXVKbF9ZN1_LA7SGX0aYKYruWQ

That's the pit file, download the modem in GearCM13 OP.
[Galaxy S 4 i9500 Android Development] darkilong:
i am sorry i cant find the thread, please guide me
[Galaxy S 4 i9500 Android Development] aboodyaiman:
Mention me in my thread, let's just not spam vishal here :D
[Galaxy S 4 i9500 Android Development] krasCGQ:
The most simple is just to use this param.bin after booting with 8GB pit instead of flashing a full bootloader. Put it in AP.
[Galaxy S 4 i9500 Android Development] darkilong:
i did everything all at once. and i put thr param.bin in bootloader, will that cause any problem?
[Galaxy S 4 i9500 Android Development] jack9394:
hello v5.1 is very stable and good,can you make a modified version for new RR rom
[Galaxy S 4 i9500 Android Development] vishal thakar:
Yup...why not

I m also RR lover ?

This time first update to RR and cm 12.1 then cm13?
[Galaxy S 4 i9500 Android Development] vishal thakar:
Update:-

black edition ll 6

(Only for Cm12.1 / LL)

*fix reboot

*wake lock reduce

*many more don't remember

Its un tested version

Plz report me.

Thank you.
[Galaxy S 4 i9500 Android Development] vishal thakar:
Update black edition v6

Only for new RR 5.7.0 made by [MENTION=5907474]kingdevil731[/MENTION]

Thanking him for provide best rom

https://drive.google.com/file/d/0ByZzA_jcaXIxcFRqYXN1RXVoc3M/view?usp=docslist_api

*synapse not working i know ...i m working to fix that
[Galaxy S 4 i9500 Android Development] kingdevil731:
thanks mate , i'm the one thanking you to provide a version for the rr rom :good::cool:
[Galaxy S 4 i9500 Android Development] Mr.Virus00:
Thanks :):good::fingers-crossed:
[Galaxy S 4 i9500 Android Development] vishal thakar:
Anytime for you mate. ?
[Galaxy S 4 i9500 Android Development] Aakash Kaushal:
Everything is working perfect in this kernel except charging speed(its quite slow)..maybe synapse isnt working!! that's way this is happening.. (Using RR remix)
[Galaxy S 4 i9500 Android Development] vishal thakar:
Use fast charge mode in kernel adiutor 》battery
[Galaxy S 4 i9500 Android Development] Aakash Kaushal:
Already enabled that but still charging is quite slow also screen freezes a lot and i have to manually restart my phone to overcome it!
[Galaxy S 4 i9500 Android Development] vishal thakar:
Screen freezes ?

May u send me log file ?
[Galaxy S 4 i9500 Android Development] daogiahieu:
I am using CM 12.1

I think that now if i want to install this kernel, i should download LL 12.1 version and the fix wifi file and flash them ? No wipe anything ?

What should i know more ?
[Galaxy S 4 i9500 Android Development] vishal thakar:
Take full twrp backup

Then flash kernel (ll 12.1) and fix wifi
[Galaxy S 4 i9500 Android Development] daogiahieu:
So i don't need to clear data or anything, right ?

Because i saw in #1, you said

but i don't know what are they and how to do those ?