Ethereum will activate the Fusaka upgrade at Epoch 411392, expected at 5:49 (UTC+8) on December 4, 2025.
This upgrade combines Osaka upgrade on execution-layer and Fulu upgrade on consensus-layer collectively known as Fusaka. By introducing PeerDAS, it will reduce Layer-2 data costs, making transfers on L2s such as Arbitrum, Optimism, and Base more affordable.
Your assets in imToken remain safe, and no action is required from users. During the upgrade window, we recommend temporarily avoiding transfers, staking, or other on-chain actions. We’ll notify you once the upgrade is complete.
Learn more: Announcement: imToken Supports the Ethereum Fusaka Upgrade
If you have questions, you can reach us in the app via My Profile - Support and Feedback.
imToken Team
2025.12.03 SGT