Shops that provide downgrade services

[thtk92]

Is there any shops that provide services to downgrade a S4 from lollipop to kit kat?

 

[waterballoon]

you can DIY lol!

1) go to sammobile.com, create an account and download a KitKat firmware for your phone and then unzip the package
2) download Odin 3.09
3) on Odin 3.09 double click on AP and browse to the firmware (it's in a md5.tar file)
4) switch off your phone. press volume down + home + power until you see the Download mode page, then press volume up to confirm
5) plug USB cable in
6) when you see a blue box that reads ID:COM3 or something on ODIN, it means your device is recognised, otherwise you need to download Samsung drivers
7) click Start and let Odin flash for you
8) once done unplug your phone, it will be in a bootloop because you downgrade from Lollipop to KitKat
9) simply switch off the phone, then press volume up + home + power to enter stock Recovery
10) use volume keys to navigate to Factory Reset and confirm. then reboot.
11) takes maybe 5 - 15 minutes? your phone will reboot into stock KitKat

 

[laksa2003]

Hw to retain user data. .

 

[waterballoon]

Hw to retain user data. .

there's not much you can do imo. you can back-up your SMS-es using apps like SMS BackUp and Restore. WhatsApp can be backed up (there after you move the entire "WhatsApp" folder in your internal storage to say, a computer and move it back in again after flashing).. contacts should be sync to Google. so your essential stuff can be backed up for sure.

 

[ahtea]

Hw to retain user data. .

You probably have to back up your data manually via KIES before you perform a downgrade.