Upgrade Raspberry PI 4 Firmware:
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sudo apt install rpi-eeprom
sudo rpi-eeprom-update
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Need a detain (ARM arch / 32bit or 64bit) OS such as Raspberry PI OS or Ubuntu.

Date added to MIMIOTE: April 2020
Date added new OS support: April 2021 (exactly a year since last update)
From: Explaining Computers on YouTube