Zcash changes its rules at block 3,543,405. Most holders have nothing to do. A few have a deadline that can't be undone.
Nobody needs your recovery phrase, or needs you to send ZEC anywhere, for an upgrade. Upgrade scams.
Nothing to do. The exchange or fund runs the upgrade for you. Deposits and withdrawals may pause for a few hours around it, as they did at past upgrades. That is normal.
A Zcash fund holds the ZEC for you: you own shares, not coins. Want ZEC in a wallet of your own?
Update late? Your ZEC is still safe: it's recorded on the network, not stored in the app. At July’s Ironwood upgrade (NU6.3) Zodl put it this way: “your funds are safe, regardless of when you update”. Until you update, the app may not be able to send.
Still on Ywallet? It never added the newest pool, Ironwood. Its developer's newer app is Zkool. Where each wallet stands.
Used the old “Zcash Shielded” app by Zondax, through Ywallet or Zkool? Ledger removes it from Ledger Wallet on 5 Nov 2026. Ledger's own Zcash app can't see the shielded ZEC those accounts hold in the Sapling pool.
The ZEC then appears in Ledger Wallet by itself, and you can shield it again there: Ledger's Zcash app holds shielded ZEC in Ironwood. Unshielding puts the amount on the public chain for a moment; that is the route Ledger gives.
Need to move ZEC around the switch? Don't count on a hardware wallet being ready on the day. After the June upgrade (NU6.2), Trezor users couldn't move ZEC until a fix shipped on 21 Sep. The coins were never lost, only stuck.
After NU7, ZEC in Sprout can't be spent, and that may never be switched back on. 12,270 ZEC is still there.
You may have some if your old addresses start with zc, or you used a full-node wallet back then: zcashd, Zcash Swing, the Zcash Desktop GUI, Zcash4Win or Zcash4Mac. You need the old wallet.dat file or an exported key: a recovery phrase alone doesn't bring Sprout coins back.
Rescue guide, step by stepFinish before NU7 (5 Nov). A rescue scan can take a day, so start now.Upgrade before activation. This time old software doesn't stop by itself: it keeps running on the old rules and splits away from everyone else. Watch for the Zebra release that carries NU7's mainnet block; on 20 Oct 2026 the latest was 7.0.0-rc.0, from before the block was proposed.
The teams' agreed timeline, set on 17 Sep.
Test network block 4,465,026.
NU7 activates at block 3,543,405.
The exact time follows from the block.