2193525_en-US

[#1]

Is there a simple way to update the DTB and kernel image on an eMMC?

During development, we need to frequently update the DTB and kernel image.
Using an SD card is very convenient; a card reader can read and write the DTB and kernel image on a FAT partition.
However, using an eMMC is very inconvenient. Is there a simpler method?

Re: Is there a simple way to update the DTB and kernel image on an eMMC?

Here is the better way, I believe.

How to upgrade Linux Kernel and dtb on eMMC without UUU 

Re: Is there a simple way to update the DTB and kernel image on an eMMC?

Hello,

To enter on fastboot mode you need:

1. Turn on the board and stop boot flow pressing any key to enter in U-boot.

2. In U-boot enter next command:

fastboot 0

Use the next command to send the file with UUU:

uuu -v -b fat_write  mmc 0:1 

Example:

uuu -v -b fat_write hello_world.elf mmc 0:1 hello_world.elf

Best regards.

Re: Is there a simple way to update the DTB and kernel image on an eMMC?

Use fastboot, as you mentioned before.

Thanks.

Re: Is there a simple way to update the DTB and kernel image on an eMMC?

Hello,

What are you referring for?

Upload DTB with fastboot or flash eMMC from SD card or both?

Best regards.

Re: Is there a simple way to update the DTB and kernel image on an eMMC?

How to do this specifically?

Is there any guidance document?

Thanks.

Re: Is there a simple way to update the DTB and kernel image on an eMMC?

Hello,

You can update the DTB file configuring your board in fastboot from U-boot and transfer the file with UUU.

Regarding flash the image I suggest you re-flash with UUU or try to flash the eMMC from SD card but I think this process is more complicated. 

Best regards.