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Update cm-emmc-flashing.adoc with troubleshooting notes #4290

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Update cm-emmc-flashing.adoc with troubleshooting notes #4290

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12 changes: 12 additions & 0 deletions documentation/asciidoc/computers/compute-module/cm-emmc-flashing.adoc
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Expand Up @@ -161,3 +161,15 @@ $ sudo cp -r <files>/* <mountpoint>
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* The CM1 bootloader returns a slightly incorrect USB packet to the host. Most USB hosts ignore it, but some USB ports don't work due to this bug. CM3 fixed this bug.

* The rpiboot version distributed with Ubuntu 24.04 and earlier has been known to fail to communicate with the device. Recompile from scratch to use the latest version.
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[source,console]
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$ sudo apt install git libusb-1.0-0-dev pkg-config build-essential
$ git clone --recurse-submodules --shallow-submodules --depth=1 https://github.com/raspberrypi/usbboot
$ cd usbboot
$ make
$ sudo ./rpiboot
----
(reference: https://www.makerforge.tech/posts/raspberry-pi-cm5-flash/)