Zcash Powered Wallet Gets Ironwood Ready Before Upgrade

Zodl Ships iOS Update Ahead of Ironwood Activation

Zodl has released version 3.8.0 on iOS, adding full support for Zcash's Ironwood network upgrade ahead of its activation on July 28. The update is a required install: users who do not upgrade before Ironwood activates risk wallet disruptions as the network transitions away from the existing Orchard shielded pool.

The release also introduces support for the new Ironwood shielded pool. Users can migrate funds manually now, with a guided in-app migration tool set to follow in a future update. Users can already tap their balance on the home screen to see how their $ZEC is split across Zcash pools, including the new Ironwood pool.

Why Ironwood Matters for Zcash

The Ironwood upgrade is designed to address the so-called "infinity" vulnerability discovered in the Orchard private transaction pool. In May 2026, Shielded Labs security engineer Taylor Hornby discovered a critical vulnerability in the Orchard pool that had existed since Orchard's activation in May 2022 and could have allowed unlimited counterfeit $ZEC to be minted undetectably within the pool. Although the vulnerability was quickly fixed through an emergency network upgrade in early June 2026, the privacy features of Orchard meant there was no cryptographic way to prove whether anyone had exploited it before the patch was released.

The current Orchard pool will be closed to new deposits and internal transactions so that funds in that pool can only move forward through the turnstile before entering Ironwood. Because the turnstile rejects any attempt to move out more $ZEC than entered, users gain a trustless guarantee that no more than the correct amount of ZEC can be circulating.

The upgrade was originally planned for July 21 but was pushed back one week to give ecosystem participants, including crypto exchanges, mining pools, and crypto wallets, time to prepare their systems. The Ironwood upgrade is scheduled to activate at block height 3,428,143, expected around 13:00 UTC on July 28, 2026.

Previously used Orchard addresses will continue to work in the new pool. Users holding transparent $ZEC balances or funds outside the legacy Orchard pool do not need to take any action, as only Orchard balances require migration.

Sources:
Zodl: Ironwood, A New Shielded Pool for Zcash
Bitrue: Zcash Ironwood Upgrade Explainer
TechTimes: Zcash Ironwood Launches Tuesday