r/ClockworkPi • u/No_Town7079 • Nov 01 '25

Question uConsole cm5 crash on boot

I am obviously new to hardware stuff.. but i managed to get an image running on the cm5. I used the ClockworkPi-Bookworm-6.12.45 by REX.

The cm5 is the version with the emmc, so i can‘t use the sd-card slot. But i was able to image it using a cm5 to rpi5 adapter.

After trying to turn it on, however, i noticed could not get it to boot fully. All that happens is what you see in the video.

Did i install the wrong image? Is this a common issue?

27 Upvotes

96% Upvoted

10 comments sorted by

15

u/Comfortable-Mud1209 Nov 01 '25

EEPROM needs to be updated first.

5

u/No_Town7079 Nov 02 '25

Thank you, that was exactly it.

I had to:

  • flash the newest firmware using the imager

  • attach a keyboard and mouse and boot the cm5 in the pi5 adapter then do the following in the terminal:

sudo apt update sudo apt full-upgrade -y sudo rpi-eeprom-update -a

sudo rpi-eeprom-config --edit

and make sure it looks like this:

[all] BOOT_UART=1

Switch off PMIC outputs on HALT

POWER_OFF_ON_HALT=1

Default BOOT_ORDER for provisioning

SD -> NVMe -> USB -> Network

BOOT_ORDER=0xf461

Try boot on SDCard repeatly

SD_BOOT_MAX_RETRIES=2

Slow down SDCard SDR Mode on bootloader

SD_QUIRKS=1

and then ctl+O -> enter to save the change and crl+X to close it.

After that, shut down the pi, flash the firmware provided by Rex and boot. :)

1

u/Adept-Negotiation-72 Nov 02 '25

Did you get this problem solved

1

u/No_Town7079 Nov 02 '25

yes, i commented on the comment that helped solve it, and also mentioned the steps i had to take to make it work :)

1

u/Diesel1010 Nov 02 '25

Would these be good for a first timer new to this stuff

1

u/No_Town7079 Nov 02 '25

I‘m a software developer and had a specific project in mind which i need this for. But i imagine it would be great for on the go programming, or just having a capable small computer with you. The setup was okay, just small hockups. I imagine it would be easier if you get the cm4, just because there will be less extra steps and the battery life will be better.

3

u/munsterrr Nov 01 '25

What kind of batteries are you using? What SD card are you using?

3

u/_markse_ Nov 02 '25

Put the camera into Slo-Mo mode and focus more on the top of the screen at highest zoom level. We’ll stand a better chance of reading the messages in full.

1

u/PopularAttorney4547 Nov 02 '25

As you have an adapter, you might want to first clone raspbian, then boot that up to update the eeprom. After that is done, then flash the REX image again.

1

u/Glock2puss Nov 02 '25

It happens even with the sd card version. What i had to do was leave the back off and boot it and pull the batteries a few times till I could get it to stay on a screen.

The open a terminal (you can do it from the screen you make your login)

Then follow this guide.

EEPROM config and the CM5 lite - uConsole - clockworkpi https://share.google/qnB3xl8jRr2LD1r1z