Custom recovery such as TWRP lets you flash third party ROMs and tools on the Samsung Galaxy F22 that would otherwise not be possible. It also allows you to root Galaxy F22 as stock recovery prevents super user access to the end user.
Keep in mind that you will loose all warranty when you flash the TWRP custom recovery. However, if you flash custom recovery and you are still on stock ROM, the service center folks will never know you ever flashed a custom recovery on your F22 android.
Step 0: Unlock Device Bootloader by toggling the OEM Unlock option in Developer Options. Device will reboot to Odin mode and will prompt you to long press volume up, device will then unlock bootloader and perform a complete factory reset so make sure to backup any data.
Step 1: Download the unofficial TWRP image from this link and vbmeta_disabled+R.tar.
Step 2: Put the device in Odin download mode by holding VolumeUp+VolumeDown and inserting USB cable after the device is completely shut down.
Step 3: Select the downloaded recovery.tar in AP slot and vbmeta_disabled_R.tar in USERDATA slot, connect the device to PC, go to options and untick “Auto-Reboot”
Step 4: Click START and the Device will get flashed, Odin will say SUCCESS!
Step 5. Exit Download mode by holding VolumeDown+PowerButton and then immediately boot
into Recovery mode by pressing VolumeUp+PowerButton.
Step 6: Congratulations, you have installed TWRP latest for your F22 4G, to access the system now, you need to perform some additional steps.
Step 7: Open up TWRP terminal and then type in “multidisabler” and then perform a full factory reset again by going into “Wipe” -> Format Data -> type “yes”.
Step 8: Now stock ROM should work fine with TWRP.