9
votes
Write to spi EEPROM in Raspberry Pi 4
Yes the EEPROM can be written to. You can install the rpi-eeprom package and check the rpi-eeprom-update script to see how it is done. Apparently, you'll have to get the EEPROM image file from /lib/...
- 27.7k
4
votes
Accepted
Can I be sure the EEPROM configuration is the latest version?
This is a bit complicated, so please bear with me:
While "LATEST" (latest actually) now is a branch of the EEPROM firmware, it may not be in the sense that you mean. I'll explain that in ...
- 21.1k
3
votes
Where is EEPROM in Pi4?
I searched Datasheets of Processor and RAM and other components of RPI4 but couldn't found where it was then I stumbled upon the mentioned above link in a comment that RPI 4 has an SPI-EEPROM so I ...
- 195
3
votes
Accepted
Is debug logging (to file or UART) available for firmware (start4.elf) portion of boot? [Pi4]
In the config on the first partition of your SD card you can set two variables:
enable_uart=1
uart_2ndstage=1
That should make start.elf print its own debug to the uart.
For the kernel add
console=...
2
votes
Raspberry Pi 4 Wifi disconnected after change screen resolution
It's weird. Sounds like HDMI signals conflicting with Wifi signals, however, change the cable to another one (better, if it has a shield it'd be better.) and add an external wifi dongle.
If you ...
- 4,285
2
votes
Accepted
RPi 4 not recognising M2 drive in argon case
Solved. It turns out the problem was — for once — insufficient force applied. I needed to shove the ssd into its slot so hard that it clicked, like a stick of ram. After that everything was fine.
- 171
2
votes
Windows 11 Pro not booting when installed onto a USB via WoR:
Booting Windows on Raspberry Pi is not fast enough compared to PCs, but some options can help you anyway:
Use fast 100 MB/s U3 Class 10 SD card (like SiliconPower Superior Pro)
Change the boot order ...
- 45
1
vote
When there are multiple boot devices, they are not booted in the order defined in BOOT_ORDER?
guys, thanks a lot for focusing on this question. I think I may find the reason why it doesn't work.
In a short, my Raspberry OS maybe not correct. Reference to the link ubuntu-mage, title Additional ...
- 31
1
vote
PI4 - no boot from usb3 samsung t5
I solved (worked around) this problem by attaching the Samsung T5 drive to one of the USB2 ports.
I'm assuming this is a kernel problem and will try the faster USB3 port again on later updates.
- 111
1
vote
Using of GPIO0 and GPIO1 on Raspberry Pi 4B
The quickest way to come up with a definitive answer is to try.
The only problem I see is that GPIO 0 and 1 may be probed during boot to see if a HAT is present. Only you can know if that will upset ...
- 70.5k
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