To update the Xiaomi Redmi 4A 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.
There are four ways Xiaomi update:
If you want to install a Xiaomi update using recovery – download the official update, reboot your phone or tablet into recovery mode and click “Install update from SD card”.
With the system update tool you can flash full Xiaomi firmware, download it here:
and save it into internal storage, go to the settings – about phone – system update – choose update package – select downloaded rom, press “OK” and wait for the end of updating.
If you want to flash stock firmware for Xiaomi Redmi using Fastboot – download and unpack ADB&Fastboot, install Drivers. How to flash stock firmware Xiaomi Redmi using Fastboot instruction is here (you need to unlock the Xiaomi bootloader).