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Clarify RPi4B firmware requirement and checking current version

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Firmware VL805 00137ac was an alpha verson that was never released.
Change firmware requirement to stable version VL805 00137ad,
and provide easy way to check if it is compliant.
This commit is contained in:
Vadim Mikhailov
2020-07-25 13:20:16 -07:00
parent b8a1b808e7
commit 5b1ae79b05
1 changed files with 3 additions and 2 deletions
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README.md
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@@ -304,8 +304,9 @@ For reference, supported Raspberry Pi models have following internal USB topolog
##### Raspberry Pi 4B
> :warning: You may need to [update firmware](https://www.raspberrypi.org/documentation/hardware/raspberrypi/booteeprom.md)
to vl805 00137ac or later to make power switching work on RPi 4B.
> :warning: If your VL805 firmware is older than `00137ad` (check with `sudo rpi-eeprom-update`),
you have to [update firmware](https://www.raspberrypi.org/documentation/hardware/raspberrypi/booteeprom.md)
to make power switching work on RPi 4B.
* USB2 hub `1`, 1 port, only connects hub `1-1` below.