MyTonWallet 4.10 release: what's new in June 2026

Early June 2026 saw MyTonWallet ship the 4.10 release line — the first major wallet update after the 4.9.x series that closed out May. A four-patch sequence (4.10.0, 4.10.1, 4.10.2, 4.10.4) rolled out incrementally over a week, in the team’s usual “ship fast, iterate fast” pattern.

This post walks through what actually changed, how to upgrade, whether there are breaking changes, and whether you should rush or wait.

TL;DR — what’s in 4.10

• Ledger fixes — jetton display on Nano X over Bluetooth, correct signing of multi-message transactions, session stability for long connections.
• Redesigned swap UI — route aggregator with explicit breakdown of network fee, aggregator fee, and slippage. Previously these collapsed into a single number.
• Multi-account up to 20 — previous cap was 10 in a single install; now 20, with hotkeys for fast switching.
• Performance — extension cold start about 30% faster, balance screen renders without skeleton-flicker for accounts with fewer than 50 jettons.
• No breaking changes — seed format, derivation path, local storage layout — all unchanged. Fully backward-compatible.

Timeline: 4.10.0 → 4.10.4

MyTonWallet ships in rolling-release style: the bulk of new features lands in .0, then patches address regressions discovered in the first few days.

4.10.0 (June 1, 2026) — feature release. New swap UI, multi-account expanded to 20 slots, the core Ledger fixes. RC-grade stability for most users.

4.10.1 (June 3) — patch. Fixes a rare extension crash when importing more than 15 watch-only accounts in quick succession. Corrects Russian-layout handling in the seed input on macOS.

4.10.2 (June 5) — patch. TON Connect 2.0 correctness when a dApp passes many jettons in a single transaction. Previously the UI displayed only the first 8 — now all of them, with a scroll list.

4.10.4 (June 8) — patch. Ledger Nano X over Bluetooth on iOS 17.5+: the connection could drop after 60-90 seconds of idle time. A heartbeat mechanism now holds it. Plus minor localisation fixes (EN, ES, UK).

4.10.3 was skipped — no public explanation, likely an internal hot-fix that didn’t ship.

Ledger fixes: the details

Ledger support in MyTonWallet has always been functional but not pristine. 4.10 closes three notable issues:

1. Jettons on Nano X over Bluetooth. In 4.9.x, when connecting a Nano X via Bluetooth (not USB), MyTonWallet sometimes failed to list jettons on the account — only native TON showed. It cleared with a reconnect, but was annoying. 4.10 fixes the Ledger app TON communication layer; jettons load reliably now.

2. Multi-message transactions. If a transaction contained more than one outgoing message (typical for DeDust swaps with automatic change return, or batch jetton transfers), Ledger would sign only the first message — the rest got dropped as “user rejected.” 4.10 signs the full batch in one confirmation flow.

3. Long-session stability. If Ledger stayed connected longer than 10-15 minutes, MyTonWallet could lose the link and demand a reconnect. On iOS this was particularly disruptive — the system would background-suspend the Ledger Live app. 4.10 adds a heartbeat (every 30 seconds) to keep the session alive.

Full Ledger setup walkthrough in our Ledger-to-TON connection guide.

The new swap UI

In 4.9.x the built-in swap showed a single combined fee number — the user didn’t see how much went to the network, how much to the MyTonWallet aggregator (0.875%), or how much was eaten by slippage. Active DeFi users grumbled.

4.10 splits it cleanly into three lines:

• Network fee — TON network gas (typically 0.05–0.15 TON).
• Aggregator fee — fixed 0.875% of swap amount.
• Slippage budget — tolerated price impact (default 1%, adjustable).

A preview screen now shows you the routing — STON.fi V2, DeDust, or a combined split route — and the estimated received amount with all fees accounted for.

This doesn’t change the economics of swaps — the aggregator fee was and remains 0.875% — but it gives users transparency. For one-off swaps the difference is negligible; for active DeFi users it’s helpful to know where the money goes. If you find 0.875% on top of network fees too rich, go direct to STON.fi or DeDust — no aggregator surcharge there.

Multi-account up to 20 slots

In 4.9.x the cap was 10 accounts per install. Enough for most, but teams running operational accounts, active DeFi farmers, and traders with strategy-based segmentation found it tight.

4.10 raises the cap to 20. Each with its own seed (or imported watch-only entry). Switching via dropdown or hotkey:

• Cmd/Ctrl + 1..9 — switch between the first 9 accounts.
• Cmd/Ctrl + 0 — open the full account list.

Useful for setups with, say, a hot DeFi account, a cold-savings account, a watch-only mirror of a Ledger cold wallet (so you can monitor balance without plugging in), and a separate account per Telegram username or .ton domain.

A safety note on multi-account: do NOT consolidate all seeds into a single encrypted store on a single device. One or two hot accounts — fine. Cold storage and large balances belong on a separate device or proper cold-storage setup.

Performance: 30% faster cold start

Extension cold start — the moment from clicking the icon to balance rendering — is about 30% faster in 4.10. Team’s measurements on a typical Chrome profile:

• 4.9.6 — ~620 ms
• 4.10.0 — ~430 ms
• 4.10.4 — ~415 ms

What improved: lazy-load jetton icons (previously all loaded eagerly, now only the visible viewport range), 30-second rate cache (previously every poll triggered a fresh fetch), optimised rendering of long transaction lists.

For accounts with fewer than 50 jettons the balance screen now renders without a skeleton-loader — data is already warm from the background process. Heavier accounts (100+ jettons) still see a skeleton, but it’s shorter.

On mobile the delta is less noticeable (mobile was already snappy in 4.9). The wins are most visible in the browser extension.

What didn’t change (and that’s good)

• Seed format — standard 24-word BIP39, compatible with Tonkeeper, Tonhub, Wallet in Telegram, older MyTonWallet versions, FlatTon, and any TON wallet honoring the spec.
• Derivation path — standard TON V4R2 + W5 (switchable in settings). Same address.
• Local encryption — Keychain on macOS/iOS, Android Keystore, Windows DPAPI for desktop, IndexedDB + Web Crypto for the extension. Unchanged.
• TON Connect 2.0 — protocol and handshake unchanged. Any dApp that worked with 4.9 works with 4.10.
• Multi-chain support — TRON, Solana, Ethereum, Base, BNB, Polygon, Arbitrum, plus TON. Same list as 4.9. Bitcoin remains on the roadmap, not yet shipped.

How to upgrade

Chrome/Firefox/Edge extension — auto-updates within 24-48 hours of publication. You can force it: in Chrome go to chrome://extensions/, toggle Developer mode, click “Update” top-right. In Firefox: about:addons, context menu on MyTonWallet → “Check for updates.”

Mobile iOS/Android — App Store / Google Play. Usually a notification within a day or two of the release.

Desktop macOS/Windows/Linux — manual install. Grab the new binary from mytonwallet.io or the GitHub releases page (mytonwalletorg/mytonwallet). Install over the existing version — local data is preserved, seed remains intact.

Post-upgrade checklist:

1. Verify the version: settings → About. Should read 4.10.4 or higher.
2. Confirm balance renders correctly. Cross-check via tonviewer.
3. If you have Ledger connected, verify the jetton list is visible. If not, reconnect the device.
4. Active dApp sessions via TON Connect should persist. If they don’t, reconnect.

Should you rush to upgrade?

For most users — yes, upgrade now. The RC sequence is done, critical bugs are caught. 4.10.1/.2/.4 closed the regression edges from .0.

For cold-storage accounts with large balances — wait a week or two. Watch the GitHub issue tracker (mytonwalletorg/mytonwallet/issues). If no critical issues surface in two weeks, upgrade. This is general cold-storage discipline, not MyTonWallet-specific.

If MyTonWallet is your only wallet — upgrade. Older versions (4.8 and below) no longer receive security patches; while no public CVEs are open right now, staying current is healthy.

If MyTonWallet is your watch-only mirror — upgrade is safe and beneficial (it’s just faster).

What to expect in 4.11

The team doesn’t publish a public roadmap, but PR activity on GitHub hints at directions:

• Bitcoin support — long-planned, a feat/bitcoin-wallet branch exists but isn’t merged. Might land in 4.11 or 4.12.
• Localised TON Connect prompts — currently some prompts remain in English even when the wallet locale is set otherwise. Cosmetic but annoying.
• Bulk transfer — sending a jetton to many addresses in one transaction. Useful for airdrops, payroll, contributor payouts.

No firm timelines, but the team’s cadence is roughly one significant update per month.

Bottom line

MyTonWallet 4.10 is a solid, non-marketing release. It fixes real annoyances (Ledger, multi-message signing) and improves UX where it lagged (swap clarity, cold-start speed). No breaking changes, smooth migration.

If you actively use MyTonWallet, upgrade now. If it’s your primary cold-storage and the balance is significant, wait two weeks and upgrade then.

Full head-to-head with the main competitor — MyTonWallet vs Tonkeeper. If you’re choosing your first wallet — best TON wallets guide.

Sources

• GitHub: mytonwalletorg/mytonwallet/releases — official release list and changelog.
• mytonwallet.io — landing, installer links.
• Issue tracker: github.com/mytonwalletorg/mytonwallet/issues — public bug database and discussions.