Guides

Explore practical guides and tutorials on crypto wallets. Learn how to set up, secure, and manage your digital assets with confidence.

Ledger Nano X, Ledger Flex, Ledger Stax and Ledger Nano S Plus hardware wallets standing side by side, the devices that get Ledger OS firmware updates

How to Update Ledger Firmware Safely

September 19, 2026

A safe, step-by-step way to update Ledger OS on the Nano X, Nano S Plus, Flex, Stax and Nano Gen5, with fixes for stuck updates and Bluetooth problems.

Andrei B.

A Coinkite Coldcard hardware wallet with a numeric keypad on a white background, an example of a cold wallet that keeps private keys offline

Hot Wallet vs Cold Wallet

September 18, 2026

A hot wallet keeps your keys on an online phone or computer; a cold wallet keeps them offline. Here's how each works, what has gone wrong with both, and how to split your crypto between them.

Andrei B.

Close-up of a Coldcard hardware wallet keypad and screen, the kind of device keypad used to type a BIP-39 passphrase

What Is a Passphrase (25th Word) and Should You Use One

September 18, 2026

A passphrase is a secret you add to your recovery phrase to open a completely separate wallet. Here is how the 25th word works, what it protects, and what it can cost you.

Andrei B.

A man using his smartphone while walking, illustrating how to send USDT from a phone

How to Send USDT (TRC20 vs ERC20 vs Solana)

September 16, 2026

Sending USDT means picking the right chain first. I walk through Trust Wallet and Binance sends on Tron, Ethereum and Solana, with fees, minimums, timing and the fee coin each network needs.

Andrei B.

Solana and Ethereum are both proof-of-stake chains, and that is about where the similarity ends. We compare slot times, fees, finality, staking, wallet support and outage history, then say which one suits your money.