Upgrading to Vallhalla (VA11 HALL-A, September Security Rollups)
Upgrading recovery and boot images
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Enter Fastboot mode, make sure your phone turned off. Press and hold the Power and Volume buttons for 3 seconds until the phone turns on. You will be in Fasboot mode.
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Once your phone is in Fastboot mode, connect your phone to a computer using a USB Cable.
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Once you connected your phone to a computer using a USB Cable, check your phone connection to the computer by executing
fastboot devices
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Once the device showed up in fastboot devices, continue with Sideloading the boot image with the following commands:
- A-Only Devices
- POCO F3 (alioth)
- POCO F4 (munch)
fastboot flash dtbo dtbo_gourami.img
fastboot flash recovery recovery_DEVICENAME.img
fastboot flash dtbo dtbo_gourami.img
fastboot flash boot boot_alioth.img
fastboot flash vendor_boot vendor_boot_alioth.img
fastboot flash dtbo dtbo_gourami.img
fastboot flash boot boot_munch.img
fastboot flash vendor_boot vendor_boot_munch.img
Sideloading
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Enter Recovery mode by pressing and holding the Power and Volume up buttons for 3 seconds until the phone turns on. You will be in Recovery mode.
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Once your phone is in Recovery mode and shows “No Command”, hit Power button, while holding it, hit Volume + (Up) button.
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Use the volume buttons to move through the menu options, when “Install update through ADB” is highlighted, press the Power button.
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Flash the ROM through recovery with adb sideload command from your Mac/PC.
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Use the volume buttons to move through the menu options, when “Reboot to System” is highlighted, press the Power button.