29 October 2022: v2.1.2 now available - this fixes the previous AuxPow fail in v2.1.1

https://github.com/nyancoin-official/nyancoin-client/releases/tag/v2.1.2
https://nyancoin.info/download.nyan

Binaries are a direct drop-in replacement for v2.x, no other changes are required.

To avoid losses, please ensure you are making regular backups of wallet.dat and storing them on a physically separate device.