In the migration document of legrato 21.05.0 you can read there is a release 17 yocto 3.1 and a new kernel. Where can this release 17 be found.
WP76 firmware Release 17 and WP77 firmware Release 15 include a major upgrade of the firmware
running on the module. The new release will replace the Linux distro and modem
firmware with upgraded:
- Yocto-3.1 packages and libraries
- Linux kernel version 4.14.217