# Fusaka Update - Information for Blob users

DevFeed: [Fusaka Update - Information for Blob users](<https://devfeed.tech/articles/fusaka-update-information-for-blob-users-17191.md>)

Original publisher: [Read original article](<https://blog.ethereum.org/en/2025/10/15/fusaka-blob-update>)

Author: Marius van der Wijden

Published: 2025-10-15T00:00:00Z

Content type: release

Language: en

Sources: [Ethereum Foundation Blog](<https://devfeed.tech/sources/ethereum-foundation-blog.md>)

Topics: [Ethereum](<https://devfeed.tech/topics/ethereum.md>), [Protocol (disambiguation)](<https://devfeed.tech/topics/protocol.md>), [Transactions](<https://devfeed.tech/topics/transactions.md>), [networking](<https://devfeed.tech/topics/networking.md>)

Tags: [code](<https://devfeed.tech/tags/code.md>), [ethereum](<https://devfeed.tech/tags/ethereum.md>), [networking](<https://devfeed.tech/tags/networking.md>), [protocol](<https://devfeed.tech/tags/protocol.md>), [research-development](<https://devfeed.tech/tags/research-development.md>), [transactions](<https://devfeed.tech/tags/transactions.md>)

## AI overview

The article explains that EIP-7594, introduced in preparation for Ethereum's Fusaka upgrade, changes proof formats from blob proofs to cell proofs. L2s and other blob transaction originators should update their software, and may need to resend transactions after the fork if they are not included.

## Source excerpt

tl;dr: Over the last couple of days, some L2s noticed that their deployments on Sepolia didn't work properly anymore. This is due to EIP-7594 which changes the format for proofs. In anticipation of Fusaka, we urge all blob originators to update their software to create Cell Proofs instead of blob...