ZBT WE3526 snapshots broken

Ever since my first attempt last week (7/15) through yesterday 7/21, snapshot builds for the ZBT WE3526 just result in a bricked router (stuck in a boot loop). So maybe the DTS or something else is not configured correctly for this model.
Last snapshot I tried that worked was from April 29, 2020.

Anyone else seeing this? Are other 7621 targets running OK?