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Documentation

A complete guide to Magnum Wallet v3.7.2 for Windows, macOS, and Linux. Start at the top if this is your first install, or use the menu on the left to jump to a topic.

Overview

Magnum is a non-custodial desktop wallet. Keys are generated on your computer, encrypted with your password, and stored in a local file. There is no account, no registration, and no server that holds your coins.

  • 150+ supported assets across major chains
  • Built-in exchange that compares rates from several providers
  • Staking for supported proof of stake coins
  • Ledger and Trezor support
  • Recovery from a 12 word phrase on any machine

Because the wallet is non-custodial, recovery depends entirely on your backup. If both the wallet file and the recovery phrase are lost, nobody can restore access.

Installation

Windows 10 and 11

1

Download the Magnum Wallet v3.7.2.zip from the Download page

2

Extract the ZIP archive to your preferred folder

3

Open the extracted folder and launch Magnum Wallet

4

Optionally, create a desktop shortcut for quick access

SmartScreen may show a warning the first time. Click “More info”, then “Run anyway”. Check the file hash on the Download page if you want to verify the ZIP archive first.

macOS 11 and later

1

Download Magnum Wallet v3.7.2.dmg

2

Open the image and drag Magnum into Applications

3

Right click the app and choose Open the first time so Gatekeeper lets it start

Linux

The AppImage runs on most distributions without installation:

chmod +x "Magnum Wallet v3.7.2.AppImage"
./"Magnum Wallet v3.7.2.AppImage"

If the window does not appear, install the usual desktop libraries (libfuse2 on Ubuntu 22.04 and newer) and start the file from a terminal to read the output.

System requirements

  • 64 bit CPU, 4 GB RAM, about 500 MB free disk space
  • Windows 10, macOS 11, or a current Linux desktop
  • An internet connection for balances, swaps, and staking

Create a Wallet

1

Click "Create New Wallet" on the welcome screen

2

Set a password. It encrypts the wallet file on this computer and cannot be reset

3

Write the 12 word recovery phrase on paper in the exact order shown

4

Confirm the phrase when the app asks for the words back

5

Open the asset manager and switch on the coins you plan to use

Never type your recovery phrase into a website, a chat, or a support ticket. Magnum support has no use for it and will never ask.

Import an Existing Wallet

On the welcome screen choose "Restore from Backup" for a Magnum backup file, or "Import Mnemonic Phrase" for a 12 or 24 word phrase from another wallet. Single coin private keys can be imported later from the coin screen.

  • BIP39 phrases of 12, 18, and 24 words are supported
  • An optional BIP39 passphrase can be entered during import
  • Derivation paths can be adjusted for chains where wallets differ

If balances look empty after an import, the derivation path is the usual cause. Compare the first address with the one shown in your previous wallet before assuming funds are missing.

Interface Basics

  • Portfolio: total value, per coin balances, and the chart
  • Coin screen: Send, Receive, history, and staking for that asset
  • Exchange: swap between assets with provider quotes side by side
  • Settings: security, network, currency, and language

Manage Assets

Open the asset manager to show or hide coins. Hiding a coin only affects the list, the keys and balances stay in the wallet. Use the search field for tokens that are not in the default list, then add them by contract address as described under Custom Tokens.

Send & Receive

Receiving

Open the coin, click Receive, and share the address or the QR code. Always send an asset to an address on its own network. Coins sent over the wrong network usually cannot be recovered.

Sending

1

Open the coin and click Send

2

Paste the recipient address and check the first and last characters

3

Enter the amount, or use Max to send the full balance minus the fee

4

Review the network fee and adjust it if the chain allows

5

Confirm with your password. The transaction is signed on your computer and broadcast to the network

Token transfers pay fees in the native coin of the chain. To move USDT on Ethereum you need ETH in the same wallet.

Exchange

Pick the asset you hold, the asset you want, and the amount. Magnum requests quotes from several providers and shows the rate, the provider fee, and the amount you would receive after that fee. You choose the provider, then confirm.

  • Quotes are estimates and move with the market until the swap is accepted
  • The provider sets its own minimum and maximum amounts
  • Network fees on both chains apply on top of the provider fee
  • A swap that leaves the wallet is a normal on chain transaction and cannot be reversed

If a swap is still marked pending after the quoted time, open the transaction in the explorer link inside the app. Exchanges that already received your coins settle on their own schedule.

Staking

Open a supported proof of stake coin such as XTZ or ATOM and click Earn. Select a validator, enter the amount to delegate, and confirm. Your coins stay in your wallet, the delegation only assigns voting or validation rights.

  • Rewards depend on the network and the validator commission
  • Most chains pay the first rewards after several cycles or epochs
  • Unbonding takes days on many chains and funds are locked during that time
  • A validator that goes offline or is slashed reduces rewards

Network Fees

Magnum charges nothing for sending, receiving, or holding. Every on chain action pays the network, and swaps also pay the provider that fills them. Fee estimates come from the network and rise when blocks are full.

  • Bitcoin style chains: fee per byte, higher rates confirm sooner
  • Ethereum style chains: gas price and gas limit, editable before sending
  • Fee too low means the transaction waits in the mempool, not that it is lost

History & Explorers

Each coin screen lists its transactions with status, amount, and fee. Click a record to open it in a public block explorer, which is the authoritative source once a transaction has been broadcast. History is rebuilt from the chain, so it reappears after a restore.

Backup & Recovery

Two independent backups are worth keeping: the recovery phrase and an encrypted wallet file from Settings, Security, Backup.

1

Store the written phrase somewhere dry, private, and away from your computer

2

Export the encrypted backup file and copy it to external storage

3

Test recovery once on a second machine or a fresh install before you hold a large balance

A photo of the phrase in a gallery, a cloud note, or a password manager sync is the most common way people lose funds. Keep it offline.

Passwords & Locking

The password encrypts the wallet file and is required for every signature. It is never sent anywhere, so it cannot be reset or recovered. If you forget it, restore the wallet from the recovery phrase and set a new one. Auto lock can be enabled in Settings, Security.

Hardware Wallets

Ledger and Trezor devices can be used inside Magnum. Keys stay on the device, Magnum builds the transaction and the device signs it after you approve it on the hardware screen.

1

Connect the device by USB and unlock it

2

Open the app for the chain you want, for example Bitcoin or Ethereum

3

In Magnum choose Add Hardware Wallet and select the accounts to load

4

Verify every address and amount on the device display before approving

On Linux, add the vendor udev rules if the device is not detected. On Windows, close other wallet software that may be holding the USB connection.

What Magnum Can and Cannot See

  • Keys, the recovery phrase, and the password stay on your device
  • Balance and history lookups go to blockchain nodes, which receive your public addresses and IP
  • Swaps send the order details to the provider you pick, under its own terms
  • Support sees only what you write in an email

Full details are on the Privacy page.

Network Settings

Settings, Network lets you switch the RPC endpoint per chain. Use it when the default node is slow or unreachable, or when you prefer your own node. Enter the full URL, save, then reopen the coin to resync.

Custom Tokens

1

Open the asset manager and choose Add Custom Token

2

Select the network, then paste the contract address

3

Check the symbol and decimals that are loaded, then save

Anyone can deploy a contract with a familiar name. Copy the address from the project itself or from a block explorer listing, not from social media.

Files & Data Location

Wallet data lives in your user profile:

Windows  %APPDATA%\Magnum
macOS    ~/Library/Application Support/Magnum
Linux    ~/.config/Magnum

Copying this folder moves the wallet to another computer, and it is still protected by your password. Deleting it removes the wallet from the machine, so make sure your backups exist first.

Updates & Versions

New versions are announced in the app and published on the Download page. Updates replace the program files and leave wallet data untouched, but exporting a backup before updating is still the safe habit. Download release files only from the official site.

Common Issues

Balance does not appear or stays stale

Check the connection, switch the RPC endpoint in Settings, Network, then restart the app. Compare the address on a block explorer to confirm where the funds actually are.

Transaction stuck pending

During congestion a low fee means a long wait. Open the transaction in the explorer. On Ethereum style chains you can replace it with a higher fee transaction using the same nonce.

Token sent but not visible

Add the token by contract address, and make sure the network matches the one used by the sender.

Swap not arriving

Find the order ID in the exchange history and check the status with the provider. Cross chain swaps can take much longer than the estimate.

App will not start

Reinstall the current version over the existing one and start it from a terminal or command prompt to see the error text. Wallet data is kept in a separate folder and survives a reinstall.

Error Messages

  • Insufficient funds for gas: add native coin to the same address
  • Nonce too low: an earlier transaction is still pending, wait or replace it
  • Invalid address: the address does not match the selected network
  • Node unreachable: the RPC endpoint is down, switch it in Settings
  • Wrong password: the wallet file belongs to a different password, restore from the phrase if needed

Contact Support

Step by step fixes for the most reported problems are on the Solutions page, and short answers are on the FAQ page. If you still need help, write to support with your operating system, the app version, the coin, and the transaction ID. Never include your recovery phrase, password, or private keys.