Trezor Suite Swap Slippage Offer Not Updating Fix

To resolve Trezor Suite Swap Slippage Offer Not Updating Fix, resolve stale quote errors in Trezor Suite DEX swaps. Learn why repeated slippage changes froze offer amounts and how to verify trades before signing. Ensure all derivation paths, environment parameters, and cryptographic signatures are verified client-side using deterministic tools before broadcasting live transactions.

When executing decentralized exchange (DEX) swaps in Trezor Suite, adjusting your slippage tolerance multiple times can cause the displayed offer amount, provider fee, and estimated output to freeze. Rather than recalculating the expected trade return based on the updated tolerance parameter, the interface continues to display stale quote values from the initial query.

This state-caching defect was addressed in Trezor Suite Mobile version 26.9.1. If you are operating on an older build, updating the application or manually restarting the trade quote query resolves the freeze. Under no circumstances should you increase slippage tolerance indiscriminately or approve a transaction whose terms do not precisely match current market rates.

[!NOTE] Reviewed & Verified: October 4, 2026 | Analyzed against Trezor Suite v26.9.1@mobile changelog and DEX clear signing protocols. No funds or mnemonics required.

Applies to

• Software: Trezor Suite Mobile (Android/iOS) and Trezor Suite Desktop integrated Trade/Swap flows.
• Hardware Devices: Trezor Safe 3, Trezor Safe 5, Trezor Model T, Trezor Model One.
• Confirmed Fixed Version: Trezor Suite Mobile v26.9.1.
• Affected Versions: Trezor Suite Mobile v26.8.1 and earlier.
• Integrations: Integrated 1inch, ChangeHero, and decentralized swap aggregator routing.

Confirm This Is Your Issue

Verify whether your interface demonstrates this quote-caching bug:

1. Repeated Slippage Modification: You initiate a swap (e.g., swapping ETH for DAI), open the Slippage settings menu, change the value from default (0.5%) to 1.0%, save, and then reopen the menu to change it again (e.g., to 0.75%).
2. Static Offer Output: Despite changing the tolerance parameter multiple times, the “You receive (estimate)” and “Minimum received” amounts do not change or trigger a quote refresh spinner.
3. Mismatched Hardware Prompt: When clicking “Confirm on Trezor”, the hardware device’s physical screen displays different token amounts or gas parameters than what was shown on the frozen mobile screen.

If your device cancels the transaction with code 0x6985 during contract interaction, refer to Trezor EIP-712 Action Cancelled 0x6985 Fix.

The Danger of Slippage Inflation & Stale Quotes

Slippage tolerance defines the maximum percentage difference between the expected price of a trade and the execution price at the moment the block is mined:

$$\text{Minimum Received} = \text{Expected Output} \times (1 - \text{Slippage Tolerance})$$

When the interface fails to update the offer amount after modifying slippage:

1. False Route Assumptions: The user may believe they are locking in a favorable quote that the underlying automated market maker (AMM) pool can no longer fulfill due to rapid block price changes.
2. Revert and Wasted Gas: If the on-chain liquidity pool price moves beyond the stale tolerance boundaries, the smart contract execution will revert on-chain, forfeiting network gas fees without completing the exchange.
3. MEV Sandwich Vulnerability: In an attempt to “force” a frozen quote through, users often crank their slippage tolerance to 5%, 10%, or higher. This is highly dangerous: malicious Maximal Extractable Value (MEV) searcher bots actively monitor public mempools for high-slippage orders, front-running the transaction to artificially worsen your execution price and back-running it to extract your value.

[!WARNING] Never increase slippage tolerance beyond your risk threshold (typically 0.5%–1.0% for major pairs) simply to make a frozen UI quote execute. Arbitrarily high slippage guarantees that MEV bots will sandwich your trade, resulting in severe financial loss.

Safe Step-by-Step Resolution

Step 1: Update Trezor Suite Mobile to v26.9.1

The root cause in Trezor Suite Mobile was a state listener defect where re-entering the slippage modal did not emit an invalidateOffer event to the swap quote manager.

• Update to Trezor Suite Mobile v26.9.1 or newer via Google Play or data.trezor.io.
• In v26.9.1, closing the slippage modal immediately invalidates previous offer hashes and fetches fresh liquidity routing.

Step 2: Manually Force a Fresh Quote (If on Legacy Builds)

If you cannot update immediately:

1. Do not proceed to the “Confirm on Trezor” screen with a stale offer.
2. Click the back arrow ($\leftarrow$) to exit the swap review screen.
3. Re-enter the Trade tab, re-select the token pair, and enter the swap amount afresh.
4. Set your desired slippage tolerance once before clicking “Compare offers”.
5. Review the newly fetched quote.

Step 3: Verify the Physical Device Screen (Clear Signing)

Hardware wallets exist specifically to protect you from compromised or malfunctioning software interfaces:

1. Connect and unlock your Trezor device.
2. When Suite presents the transaction for signing, do not rely on your computer or phone screen.
3. Read the physical display on the Trezor:
   • Send Amount: Confirm the exact quantity of tokens leaving your address.
   • Receive / Minimum Output: Verify the asset name and minimum received tokens.
   • Recipient / Contract Address: Ensure the exchange router address matches the verified aggregator (e.g., 1inch router).
4. If the figures on the hardware display do not match current market conditions, reject the transaction by pressing the physical cancel button.

How to Verify the Result Safely

Verify that your slippage settings recalculate accurately without executing on-chain swaps:

1. Open the updated Trezor Suite Trade tab and initiate an arbitrary quote (e.g., 0.1 ETH to USDC).
2. Note the initial “Minimum received” figure.
3. Open Slippage, change it from 0.5% to 1.5%, and tap Done.
4. Observe the interface: a brief loading indicator should appear, and the “Minimum received” value should decrease predictably to reflect the wider boundary.
5. Re-open Slippage, change it to 0.1%, and tap Done: the value should immediately recalculate higher. This confirms that dynamic recalculation is working properly.

When This Guide Does Not Apply

• High Market Volatility on Illiquid Pairs: For low-market-cap tokens with shallow AMM pools, swap offers may expire in seconds due to legitimate on-chain price swings, triggering “Quote expired” messages. This is standard DEX mechanics, not a UI caching bug.
• Exchange Provider KYC/AML Holds: If a centralized swap partner (e.g., Changelly or ChangeHero) halts an exchange in progress, the trade is subject to partner verification rather than local client slippage mechanics.
• Insufficient Gas for Multi-Hop Swaps: If the swap fails to simulate due to insufficient native tokens (ETH/SOL/MATIC) for routing calldata, top up your fee balance before retrying.

Verified Sources & Release References

• Trezor Suite GitHub Release v26.9.1@mobile (Changelog: DEX swap slippage fix)
• Trezor Knowledge Base: Swapping Crypto in Trezor Suite
• Ethereum Foundation: Maximal Extractable Value (MEV) & Sandwich Attacks

[!TIP] Diagnostic Verification & Air-Gapped Testing: Before executing state changes or broad recovery steps, cross-reference failure parameters with our companion guide on Trezor Suite Solana Excessive Requests & Lag Fix and verify transaction calldata or cryptographic envelopes using the Master Web3 & Hardware Error Code Directory.