ALL users are encouraged to update to 0.12.1.3 ASAP. All 24/7 nodes (mining pools, masternodes, exchanges, merchants etc) should consider this update as a MUST. (no protocol bump, so all 12.1 MNs are paid - pre 12.1.3 have a risk of unexpected crash once spork2 is on again)

Mandatory update for all :

  • Users
  • Pools (no code changes in pool software needed, replace daemon - done)
  • Masternodes
  • Exchanges

https://www.dash.org/wallets/

Changelogs: https://github.com/dashpay/dash/releases/tag/v0.12.1.3

Are your MN Sentinels updated as of 25th Feb posted ? (if not , please do so NOW !) https://www.dash.org/forum/threads/please-update-to-12-1-2.13275/