URGENT Songbird nodes must upgrade again to go-flare v1.15.1
The initial v1.15.1 build has a bug in the Songbird Helicon transition. At the activation (November 11, 2026 at 08:00 UTC) the C-chain fails to start with:
“incompatible chain config: mismatching SongbirdTransition fork block timestamp in database”
The v1.15.1 release has been rebuilt with the fix (tag v1.15.1 now points to commit 9eacc2d2). Please upgrade your Songbird and Coston nodes again, even if you already run v1.15.1.
When upgrading set the `state-sync-enabled` config to `false`. You can turn it back on once Songbird reaches block 137682944, expected around 12:30 UTC.
{
"state-sync-enabled": false,
}