According to the official blog announcement of IOTA, the IOTA Rebased mainnet upgrade has officially started today (May 5, 2025) at 9am Central European Summer Time (4pm Beijing/Tokyo Time). This upgrade marks the migration of the network from the original Stardust mainnet to the new IOTA network.
The upgrade process is carried out through a "Genesis Ceremony" jointly performed by the IOTA Foundation and 12 initial validators including DLT Green, P2P, Luganodes, KILN, Stakin, etc., involving steps such as shutting down the old network, generating ledger snapshots, verifying data, creating and signing genesis blocks, and launching a new network.
For IOTA token holders, this upgrade is seamless, without the need for token migration, and the assets are secure. But users need to prepare the private key, mnemonic words, or Firefly/Bloom Stronghold backup file of the original wallet in order to import and access assets in the new official wallet (browser extension form, which will replace the no longer supported Firefly desktop wallet). Users using the Ledger hardware wallet also need to install a new version of the IOTA Ledger application that is compatible with the new mainnet.
During the upgrade period, most exchanges that support IOTA will temporarily suspend the recharge and withdrawal services of IOTA tokens, and are expected to resume normal operations shortly after the upgrade is completed. IOTA EVM is expected to resume operation within 4 to 8 hours after the main network is started.