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MSGID: 902777b0
REPLY: 6a12ea15
PID: SoupGate-Win32 v1.05
On 1/7/2024 11:08, Bryan wrote:
> On 1/6/2024 06:31, Theo wrote:
>> Bryan wrote:
>>> But looking a little closer, it looks like it's trying all the boot
>>> devices from right to left - it doesn't see the SD card so it goes to
>>> the next one. So it probably won't matter if I change the boot order,
>>> it would just never get to the SD card.
>>
>> As I mentioned in my other post, I'd boot from USB and try upgrading the
>> bootloader in EEPROM on the board:
>>
>> https://www.raspberrypi.com/documentation/computers/raspberry
pi.html#raspberry-pi-boot-eeprom
>>
>>
>> I also note there are some CM4 specific settings:
>> https://www.raspberrypi.com/documentation/computers/compute-m
dule.html#cm4bootloader
>>
>>
>
> I found out why my device won't see the SD card. But first:
>
> I can't update the onboard eeprom without using the imaging tool, that's
> apparently by design. The CM4 won't let you touch that stuff because
> it's "impossible to remove the eMMC if something goes wrong." Makes
> sense, but still a PITA for those of us not using the thing in production.
>
> However, the real reason I'm having all these issues is because, after
> inspection, my vendor sent me the 8GB eMMC version instead of the no
> eMMC version I asked for. That sucks because I don't really want storage
> I can't ever change because it likes to go bad, but there it is.
>
> I believe the reason the device won't USB boot on the MCUZone carrier is
> because it is indeed going into panic at boot - I've seen some
> information about the USB device on this being problematic.
>
> My next step is to try and flash the eMMC on this one the see what
> happens. I'll let you know.
Last update -
I tried connecting the CM4 device to my laptop to flash via the imaging
tool. The only machine I have that's not a Pi or associated device (or
something even older) is my old Win7 gaming laptop. You can install the
imaging tool on Win7, and it "supports" it, but there's apparently no
driver for the BCM2711 boot device, so you can't access it. That was a
waste of my time.
I found some instructions on flashing an image direct to eMMC from the
OS itself, meaning on the Pi:
https://www.reddit.com/r/turingpi/comments/10mk3t4/how_to_flash_emmc_cm4/
wget raspbian imgage
extract image file
sudo dd if=image of=/dev/mmcblk0 bs=10MB
clean shutdown CM4, remove USB drive and power on CM4 again
you should end up with a booting CM4
I downloaded the image, unzipped it, and SCP'd it over to the Pi. I then
used these instructions to flash the Pi, and it booted with no external
devices. Yay!
For now, I'm going to use this as-is, as I need the 4G modem to replace
some old 2G stuff that's offline in a few months here in the USA.
Otherwise, I will probably look to purchase a real Lite version at some
point in the future and pass this board on to someone who would like,
but can't afford one.
Thank you for the help - sometimes it takes someone going "well, look at
this instead" to break out of the tunnel vision and find the information
you need.
--- SoupGate-Win32 v1.05
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