install Jetpack in flash ebt cboot.bin failed(tx1)

HI everybody,

We install jetpack in flash ebt cboot.bin failed below is failed log.

[ 0.9838 ] Boot Rom communication
[ 0.9851 ] tegrarcm --chip 0x21 --rcm rcm_list_signed.xml
[ 0.9862 ] BR_CID: 0x32101001640d15000c00000019fd0140
[ 0.9870 ] RCM version 0X210001
[ 1.0034 ] Boot Rom communication completed
[ 2.0095 ]
[ 2.0106 ] Sending BCTs
[ 2.0139 ] tegrarcm --download bct P2180_A00_LP4_DSC_204Mhz.bct
[ 2.0162 ] Applet version 00.01.0000
[ 2.0318 ] Sending bct
[ 2.0320 ] […] 100%
[ 2.1923 ]
[ 2.1924 ] Sending bootloader and pre-requisite binaries
[ 2.1951 ] tegrarcm --download ebt cboot.bin 0 0 --download rp1 tegra210-jetson-tx1-p2597-2180-a01-devkit.dtb 0
[ 2.1973 ] Applet version 00.01.0000
[ 2.2127 ] Sending ebt
[ 2.3048 ]
Error: Return value 1
Command tegrarcm --download ebt cboot.bin 0 0 --download rp1 tegra210-jetson-tx1-p2597-2180-a01-devkit.dtb 0
Failed flashing t210ref.


I don’t k now the cause of this particular failure, but I see at least some of the USB communications had to have succeeded since the log shows “Boot Rom communication completed”. Is this a VM host? VM USB tends to be difficult to get to work.

hello louis_chen,

may i know which JetPack version you’re working on?
could you share the commands that you flash cboot.bin


I find that JETPACK3.1 flash cboot.bin.encrypt which is from cboot.bin and is not generated from u-boot source code R28.1 to EBT partition of my TX1 board,while JETPACK3.0 flash u-boot-dtb.bin which is generated from u-boot source code.I find cboot is the bootloader of TX1 whose system is flashed by JETPACK3.1 and the cboot include u-boot which version is U-Boot 2016.07-g0ce7ca2.
We use TX1 as a module of our product and we should reduce the bootloader time.So,I wander if there is source code for cboot.

hello lianghu,

no, cboot and uboot are different.
please refer to more details in the Boot Loader chapter of the NVIDIA Tegra Linux Driver Package, 28.1 Release Development Guide.

also, we did not public source code for cboot.

Jerry,thank you very much!


Jetpack vesion is 3.1.
So, I can skip flash cboot failed in install jetpack guide right?
The cboot can be flash before?
I also found cboot.bin in /bootloader/.


hello louis_chen,

could you please share the full flashing message of your JetPack3.1 installation progress.

I have the same problem with exactly the same message when I boot TX1 using JetPack 2.3.1 on Ubuntu 14.04. Does anyone solve this problem?