Zcash NU7: What Changed and What to Do in Your Wallet (2026)

Updated November 6, 2026.

NU7 activated on Zcash at block 3,543,405, at 02:34 UTC on November 6, 2026 (11:34 AM KST on November 6, 2026). For most people the only job is to update the wallet app. Your ZEC didn't move. If you sign with a Ledger, install Zcash app 3.10.0 or newer. Old Sprout funds are the one thing NU7 locked.

This page is for wallet users, not node operators: what changed, what stopped working, a 5-minute checklist, and what to do if your wallet can't send.

What NU7 is

NU7 is Zcash's ninth major network upgrade. ZIP 259 set its mainnet activation height at 3,543,405, and it activated on that block. The block hash is 0000000000246a2b1fecb3f465770894d146f6b7044e46b13ffb65e57e4ccd4a. Zakura's NU7 dashboard shows the upgrade active, with a 25-second target spacing and consensus branch ID 77190ad9. Node operators had to run an NU7 release, such as Zebra 7.0.0 or Zakura 1.7.0, before that block.

Wallets had to update too, because NU7 changed which transactions the network accepts.

What changed for you

Blocks every 25 seconds instead of 75

Under ZIP 218, the block target dropped from 75 seconds to 25. The same number of confirmations now takes about a third of the time. In Vizor, ZEC you receive from someone else becomes spendable after six confirmations. That used to mean about 7.5 minutes on average. Now it's about 2.5.

Issuance per day didn't change. Block rewards were divided by three and the remaining halving intervals tripled, per the Zcash Foundation.

Where fees go

NU7 changed what happens to fees, not who pays them. Under ZIP 235, 60% of each block's transaction fees now go to a reserve, and miners keep 40%. Later blocks reissue part of that reserve, starting at mainnet height 8,939,664. The 21 million ZEC cap and the four-year halving schedule are unchanged (Zebra 7.0.0).

Your wallet shows the exact fee on the review screen before you confirm. From NU7, Vizor charges 1,000 zatoshis per logical action. A transaction pays for at least two actions, so the minimum is 2,000 zatoshis (it was 10,000). v0.0.63 applies that rate from mainnet height 3,543,405 (PR #1130). ZIP 2009 would reduce the ZIP 317 marginal fee to 1,000 zatoshis per action, but it is still Proposed. Its mainnet height is 3,590,000, around November 19, 2026, which is not NU7. For how Zcash fees are calculated, see how to send ZEC.

More shielded capacity

NU7 added per-block limits on Orchard, Ironwood, and Sapling activity. The Zcash Foundation says these limits more than double Orchard throughput (2.9 to 6.6 transactions per second) and cut the worst-case sync load a spammer can push onto light wallets by about 37%.

What stopped working

Ledger users on the old Zondax app: Ledger said Sapling funds held through that app can't be moved with a Ledger device after NU7, and recovering them by other means isn't guaranteed. If that's you, follow Ledger's guidance in that post. For the current Ledger setup, see Ledger with shielded ZEC on your phone.

The 5-minute NU7 checklist

1. Update your wallet app. On a phone, open the App Store or Google Play listing and install the latest version. Vizor, Zodl, Zingo!, and Zkool all shipped NU7 releases before activation (see the table below).
2. Ledger: install Zcash app 3.10.0 or newer. Use Ledger Wallet to update the device firmware and the Zcash app. Vizor's notes require 3.10.0+ for NU7.
3. Keystone: check the firmware page. As of November 6, 2026, the latest Cypherpunk firmware is still 3.2.0 (October 23, 2026), and its changelog does not mention NU7. Check keyst.one/firmware.
4. Check your wallet on the readiness board. The community-run NU7 readiness board tracks wallets, libraries, and swaps from public evidence.
5. Send a small test amount. If it confirms, you're done.

Is my wallet ready?

Use the readiness board for the current status. Its statuses change through the day, so we link it rather than copy it. "Fixed" means a fix is merged or released. It doesn't always mean the update has reached your app store yet, and the board's notes say when.

On November 6, 2026, Vizor's App Store version was still 0.0.60, and its notes say "Ready for NU7." The latest desktop release was still v0.0.63. The other rows are the NU7 releases we checked before activation:

Vizor switched to NU7 automatically when the network reached the activation height, which is what its v0.0.63 notes describe. Those notes also said some actions might pause briefly around activation.

My wallet can't send after NU7. What now?

1. Update the app. This fixes it in almost every case.
2. Update your hardware wallet app. Vizor requires Ledger Zcash app 3.10.0 or newer for NU7.
3. If your wallet has no NU7 update, restore your recovery phrase in a wallet that does. Your funds are on the chain, not in the app. Restore your phrase in Vizor, set the wallet birthday on or before the day you created the old wallet, and let it sync. The Zodl to Vizor guide walks through the same steps.
4. Never type your recovery phrase into a website, a form, or a chat. A real wallet only asks for it on its own restore screen.

A transaction signed before activation and never mined can't be mined now. ZIP 259 asks wallets to report these clearly. Once the wallet drops it, those funds are spendable again and you can resend.

Ironwood migrations that spanned NU7

A scheduled Orchard-to-Ironwood migration is a set of transactions signed ahead of time. Parts signed for the old consensus branch can't be mined after NU7, so wallets handled the upgrade:

• Vizor stops a migration the upgrade interrupts, shows what remains, and guides you through moving the rest.
• Zodl paused private migration until the upgrade and offers to migrate the remaining funds if the upgrade stopped a run.

Confirmed transfers are unaffected. For the full process, see Orchard to Ironwood: how to move your shielded ZEC.

Watch for upgrade scams

Network upgrades bring fake "upgrade your wallet" messages. No wallet team will DM you to migrate, sync, or "validate" your wallet, and no real upgrade needs your recovery phrase. Install updates only from the App Store, Google Play, or the wallet's official site. Vizor's links are at vizor.cash/get.

FAQ

What is Zcash NU7?

NU7 is the Zcash network upgrade that activated at block 3,543,405 at 02:34 UTC on November 6, 2026. It cut the block target from 75 seconds to 25, sends 60% of each block's transaction fees to a reserve instead of to miners, adds per-block limits on shielded activity, and makes version 4 transactions invalid. The 21 million ZEC cap and the four-year halving schedule are unchanged.

Do I need to do anything with my ZEC for NU7?

Usually not. Your funds stay where they are. Update your wallet app to an NU7-ready version, and if you use a Ledger, install Zcash app 3.10.0 or newer. The exception is old Sprout funds, which can no longer be spent because Sprout only works with version 4 transactions.

Why can't my Zcash wallet send after NU7?

After NU7, nodes reject version 4 transactions, and signatures must commit to NU7's new consensus branch ID. A wallet or hardware wallet app that hasn't updated builds transactions the network won't accept. Update it, or restore your recovery phrase in a wallet that is ready for NU7.

What happens to Sprout funds after NU7?

They can't be spent. Sprout transfers only exist as version 4 transactions, and NU7 disallows those. ZIP 2003 does not burn or unissue Sprout funds, so a future upgrade could in theory add a way to retrieve them, but nothing like that is scheduled.

Does NU7 change Zcash's supply or fees?

The supply cap stays at 21 million ZEC and daily issuance stays the same, because block rewards were divided by three to match the faster blocks. What changes is where fees go: 60% of each block's fees now go to a reserve that later blocks reissue, and miners keep 40%. Your wallet shows the exact fee before you confirm a send.

Is Vizor ready for NU7?

Yes. Vizor 0.0.60 on iPhone and Android and 0.0.63 on desktop are NU7-ready, and Vizor switched to NU7 automatically at the activation height. Ledger users need Zcash app 3.10.0 or newer.

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Need an NU7-ready wallet? Vizor is free and open source, made by a team with years of experience building crypto wallets. Get it for iPhone or Android, or for Mac, Windows, and Linux at vizor.cash/get. It works with Ledger and Keystone. See also how to store ZEC safely.