I am having a similar problem, but worse - it comes up in config mode, always. I'm using the vers from 2015-10-18, but I was told the vers to use is 2015-11-08, here: http://bazaar.launchpad.net/~toykeeper/flashlight-firmware/tiny25/files/head:/ToyKeeper/bistro/.
For fuses, Halo said here:
bin/flash-25.sh (2015-11-08) fuses
L: 0xe2, H: 0xdf, E: 0xff in Fuse Calculator
Looking through my files it seems I’ve been using BOD 1.8v, startup delay 64ms (max). L: 0xe2, H: 0xde, E: 0xff. I believe I been using those since the beginning with bistro, ignoring the ones mentioned in bistro.c. Thought a longer startup delay wouldn’t hurt anything.