NONE: Invalid value MemBct dram size

Robotics & Edge Computing Jetson Systems Jetson AGX Xavier
1

I have several Jetsons:
P/N: 699-82888-0004-400
P-Number: p2888-0004

Screenshot from 2025-06-19 15-33-46
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I create a cloned image of my system.
Lately, I purchased several more AGX units that I failed to flash.
I tried to reflash my old Jetsons, and the old AGX module works fine.
The new Jetson model is the same
P2888
900-82888-0040-000

While I flash the new AGX that I purchased, I receive this log:

[ 2.8903 ] tegrahost_v2 --chip 0x19 --align mem_rcm.bct
[ 2.8908 ]
[ 2.8923 ] tegrahost_v2 --chip 0x19 0 --magicid MEMB --ratchet_blob ratchet_blob.bin --appendsigheader mem_rcm.bct zerosbk
[ 2.8925 ] adding BCH for mem_rcm.bct
[ 2.8939 ]
[ 2.8999 ] tegrasign_v3.py --key None --list mem_rcm_sigheader.bct_list.xml --pubkeyhash pub_key.key
[ 2.9000 ] Assuming zero filled SBK key
[ 2.8993 ] tegrahost_v2 --chip 0x19 0 --updatesigheader mem_rcm_sigheader.bct.encrypt mem_rcm_sigheader.bct.hash zerosbk
[ 2.9004 ]
[ 2.9004 ] Copying signatures
[ 2.9018 ] tegrahost_v2 --chip 0x19 0 --partitionlayout flash.xml.bin --updatesig images_list_signed.xml
[ 4.1509 ]
[ 4.1509 ] Boot Rom communication
[ 4.1527 ] tegrarcm_v2 --chip 0x19 0 --rcm rcm_list_signed.xml
[ 4.1533 ] BR_CID: 0x880219116429e5c220000000150181c0
[ 4.3466 ] RCM version 0X190001
[ 4.3475 ] Boot Rom communication completed
[ 5.3655 ]
[ 6.3698 ] tegrarcm_v2 --isapplet
[ 6.3710 ] Applet version 01.00.0000
[ 6.3829 ]
[ 6.3829 ] Sending BCTs
[ 6.3857 ] tegrarcm_v2 --download bct_bootrom br_bct_BR.bct --download bct_mb1 mb1_bct_MB1_sigheader.bct.encrypt --download bct_mem mem_rcm_sigheader.bct.encrypt
[ 6.3869 ] Applet version 01.00.0000
[ 6.4042 ] Sending bct_bootrom
[ 6.4045 ] […] 100%
[ 6.4060 ] Sending bct_mb1
[ 6.4106 ] […] 100%
[ 6.4149 ] Sending bct_mem
[ 6.4627 ] […] 100%
[ 6.4690 ] 0000000000000102: E> NONE: Invalid value MemBct dram size: 0MB for slot: 3.
[ 6.4860 ]
[ 6.4860 ]
Error: Return value 2
Command tegrarcm_v2 --download bct_bootrom br_bct_BR.bct --download bct_mb1 mb1_bct_MB1_sigheader.bct.encrypt --download bct_mem mem_rcm_sigheader.bct.encrypt
Failed flashing t186ref.

3

Hi,

How do you flash your device?
Please provide the command for us to review.
Also refer to the below doc to get compatible version.

Thanks

4

New modules have PCN update too. You may need to check our PCN announcements and use the proper BSP versin.

5

I am using the command:

cd ~/nvidia/nvidia_sdk/JetPack_4.6_Linux_JETSON_AGX_XAVIER_TARGETS/Linux_for_Tegra
sudo ./flash.sh -r cti/xavier/rogue/jcb005-avc-mipi-4cam mmcblk0p1

I still succeeded in flashing it on an older production series of the AGX Module (same P/N).

7

Just to clarify that how you flashed your board does not have anything to what we just told.

You need to apply PCN patch so that it could flash new modules. Otherwise, upgrade your BSP versin to latest one and it shall support new modules.

8

Oh, we’ve started upgrading our systems to JP5.1.2, so there is an option to stay at JP4.6.0?
Where can I find the PCN Patch and PCN announcement?

9

All the PCN announcement could be found

11

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