[L4T 35.5.0] Cannot burn fuses or flash SOM with new Micron DRAM (PCN212822)

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin Nano
1

Our team has been using the Orin Nano SOM on L4T 35.5.0.

We have been notified of a change to new Micron DRAM (as part of PCN212822), and have received these new SOMs as part of testing.

Basically we have to extract new BCT and DVFS files (t234-dram-package-35.0.0_2024-09-18.tbz2) to our “Linux_for_Tegra” folder, and then flash the SOM again with these files. In addition, we have fuses burned onto each SOM. I connected this Orin Nano SOM with new DRAM to our Linux PC with the Orin Nano Dev Kit, and attempted to run these commands:

  • tar -xvf t234-dram-package-35.5.0_2024-09-18.tbz2
  • sudo ./odmfuse.sh -i 0x23 -k rsa.pem -S sbk.key -X fuse.xml jetson-orin-nano-devkit
  • sudo ROOTFS_AB=1 ./tools/kernel_flash/l4t_initrd_flash.sh
    –network usb0
    -u rsa.pem -v sbk.key -i sym2_t234.key
    -p “-c ./bootloader/t186ref/cfg/flash_t234_qspi.xml”
    –showlogs jetson-orin-nano-devkit internal

Unfortunately, I am not able to burn the fuses on this SOM, and subsequently cannot flash the img either.

Is there a step that I am missing? I attached UART and terminal logs to this ticket. Please let me know if I am missing anything.

Screenshot 2025-11-19 103010

11-19-2025_uart_logs.txt (14.7 KB)

11-19-2025_terminal_logs.txt (94.1 KB)

4

Please keep in mind, I switched out the SOM with an “old” SOM that does not have this new DRAM. I was able to burn fuses and flash the “old” SOM with the same hardware setup, so I do not think there is something wrong with my Linux PC, Dev Kit, or USB-C cable.

5

For PCN212822 samples, we will provide the overlay patch in Jetson PCN Download Center | NVIDIA Developer, that’s under internal SQA validation process now.

7

I have been using the overlay patch provided in that link.

It’s not working.

jetpack513
jetpack513733×648 21.4 KB

8

The overlay patch for PCN212822 hasn’t been published yet.

9

What is this file “t234-dram-package-35.5.0_2024-09-18.tbz2” for, then?

10

I see a new overlay patch was uploaded today. Is this what I need to be using?

is-this-correct
is-this-correct911×138 4.2 KB

11

Hi,

I tried using this new DRAM package for installing.
I was able to run “odmfuse.sh” successfully, however I get this new error when running “l4t_initrd_flash.sh”:
mtd_debug: error!: open()
QSPI storage size: bytes.

I attached terminal logs and UART logs below. Do you know what this error would be coming from?

12-16-2025_terminal_logs.txt (154.6 KB)

12-16-2025_uart_logs.txt (85.8 KB)

13

hello kevin.choi,

let me have confirmation,
did you fuse this new SOM already? this is the commands for adding fuse variable onto SBKPKC fused target.

besides..
please see-also Jetson Orin Series Modules Fuse Update Field Services Bulletin.
since it’s new Orin SOM, please aware that the fuse value for boot_security_info was burned (by manufacturing) to 0x1E0.
according to the documentation, you must bitwise logically OR the desired value with 0x1E0 in the fuse programming flow.