To update the Samsung Galaxy S4 you need to install an alternate firmware (ROM). If the device does not automatically update by itselves.
You can use the new firmware for your smartphone.
You have to choose the firmware version and follow the instructions. If you have a trouble in update you can write about it in the comments below, we’ll help you.
Odin flash tool is the most popular flasher for Samsung smartphones and tablet. With Odin download you can install a new update, also Odin flash twrp and root. Here you can find the Odin update tool guide for your Samsung device.
First step to use Odin flash tool is installing Samsung drivers:
After installing will done download Odin here and unpack it to the PC. Download the Odin Android update for Samsung, unpack downloaded ROM to your PC and follow the guide how to flash Samsung with Odin flash tool:
Done! Now you know how to use Odin flash tool to install firmware.
By the Odin yo can also flash TWRP recovery to the Samsung devices by instruction above, except 2nd and 3rd step, instead the firmware select a TWRP.tar file in the AP line.Read more