Third Party Carrier Boards

Lock NVIDIA L4T Packages

Run this immediately after first boot, before any apt upgrade:

sudo apt-mark hold \
  nvidia-l4t-kernel \
  nvidia-l4t-kernel-dtbs \
  nvidia-l4t-bootloader \
  nvidia-l4t-display-kernel \
  nvidia-l4t-initrd \
  nvidia-l4t-kernel-headers \
  nvidia-l4t-firmware \
  linux-firmware

Third-party carrier boards (e.g. Seeed) ship a custom BSP with patched kernel, DTBs, and bootloader tuned for their hardware. A standard NVIDIA apt upgrade will silently overwrite these custom files, breaking the board completely. Verify the hold is active with:

sudo apt-mark showhold