> ## Documentation Index
> Fetch the complete documentation index at: https://docs.portalhq.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Upgrading to EIP-7702

> Learn how to check wallet account type and upgrade EOA wallets to EIP-7702 using Portal's Flutter SDK.

Portal's Flutter SDK provides EVM Account Type management through the `portal.evmAccountType` API. This enables checking wallet account types and upgrading EOA wallets to EIP-7702 on supported EVM chains.

## Overview

The EVM Account Type functionality allows you to:

* **Check wallet status** to determine the current account type
* **Upgrade to EIP-7702** to enable ejecting the Portal wallet's EOA private key

## Prerequisites

Before using EVM Account Type operations, ensure you have:

* A properly initialized Portal client
* An active wallet on a supported network (see [Create a wallet](./create-a-wallet))
* Understanding of [EVM Account Type concepts](/resources/evmAccountType)
* You fund the [Upgrade Sponsor address with native tokens for the target chain in the Portal Dashboard](https://app.portalhq.io/upgrade-sponsorship)

## Checking Wallet Status

Use `getStatus` to check the current account type of your wallet. The response includes both the account status and metadata about the wallet addresses.

```dart theme={null}
try {
  final chainId = 'eip155:10143'; // Monad Testnet

  final response = await portal.evmAccountType.getStatus(chainId: chainId);

  print('Status: ${response.data.status}');
  print('EOA Address: ${response.metadata.eoaAddress}');

  if (response.metadata.smartContractAddress != null) {
    print('Smart Contract Address: ${response.metadata.smartContractAddress}');
  }

  if (response.data.status == 'EIP_155_EOA') {
    print('Can upgrade to EIP-7702');
  } else if (response.data.status == 'EIP_7702_EOA') {
    print('Already upgraded');
  } else {
    print('Cannot upgrade');
  }
} catch (e) {
  print('Failed to get account status: $e');
}
```

**Response (`EvmAccountTypeStatusResponse`):**

* `data.status`: One of `EIP_155_EOA`, `SMART_CONTRACT`, or `EIP_7702_EOA`
* `metadata.eoaAddress`: The EOA address associated with the wallet
* `metadata.smartContractAddress`: Your smart contract wallet address (optional, may be `null` for EOA-only accounts)
* `metadata.chainId`: The chain identifier

***

## Upgrading to EIP-7702

Use `upgradeTo7702` to upgrade an EOA wallet to EIP-7702. This method automatically handles the entire upgrade process, including gas subsidization, and returns the transaction hash directly.

```dart theme={null}
try {
  final chainId = 'eip155:10143'; // Monad Testnet

  // Upgrade to EIP-7702
  final txHash = await portal.evmAccountType.upgradeTo7702(chainId: chainId);
  print('Upgrade done! TX: $txHash');

  // Verify final status
  final status = await portal.evmAccountType.getStatus(chainId: chainId);
  print('Final Status: ${status.data.status}');

  if (status.data.status == 'EIP_7702_EOA') {
    print('Successfully upgraded to EIP-7702!');
  }
} on PortalException catch (e) {
  print('Upgrade error: ${e.message}');
} catch (e) {
  print('Upgrade failed: $e');
}
```

**What happens during the upgrade:**

1. **Chain validation**: Verifies the chain uses the `eip155` namespace
2. **Status check**: Confirms the wallet is currently an `EIP_155_EOA`
3. **Authorization building**: Creates the EIP-7702 authorization list
4. **Signature**: Signs the authorization hash with your wallet
5. **Transaction submission**: Submits the subsidized upgrade transaction (gas is paid by Portal)
6. **Transaction hash**: Returns the on-chain transaction hash

**Response:**

The method returns a `String` containing the transaction hash of the submitted upgrade transaction.

**Error handling:**

The method throws a `PortalException` with the following error codes:

* `NOT_INITIALIZED`: Portal was not initialized before calling the method
* `EVM_ACCOUNT_TYPE_UPGRADE_ERROR`: The upgrade failed (e.g., wallet is not an `EIP_155_EOA`, unsupported chain, or transaction submission failed)

***

<Warning>
  The upgrade process is irreversible per wallet. Once upgraded to EIP-7702, the wallet cannot be reverted to a standard EOA on that chain.
</Warning>

***

## Supported Networks

EVM Account Type upgrades are currently available on:

* **Monad Testnet** (`eip155:10143`)

For a complete list of supported chains, reach out to the Portal team.

***

## Next Steps

* Learn about [signing transactions](./sign-a-transaction)
* Explore [Portal API methods](./portal-api-methods)
* Review [EVM Account Type concepts](/resources/evmAccountType)
* Check out [wallet lifecycle management](./manage-wallet-lifecycle-states)