This project is retired: Sovol boards are now supported in mainline Armbian.
Instead of maintaining a separate repack of the BigTreeTech CB1 image, the Sovol H616 boards were added to Armbian itself (armbian/build#10255). Get images directly from Armbian:
Existing Sovobian installs keep working: the per-board overlay lives in overlay-user/, which kernel packages never touch, so apt upgrades continue as usual. For a fresh install, use the mainline images above.
Old Sovobian images remain available in Releases but will not be updated.