> For the complete documentation index, see [llms.txt](/llms.txt).

# Migration guide from v8.1 to v8.2 for Web3Auth PnP iOS SDK

## Overview[​](#overview "Direct link to Overview")

This migration guide provides steps for upgrading from version 8.1(v8.1) to version 8.2(v8.2) of the Web3Auth PnP iOS SDK. The guide outlines significant breaking change with the removal of `loginParams` from `launchWalletServices`.

## Changes in detail[​](#changes-in-detail "Direct link to Changes in detail")

### `launchWalletServices` method updates[​](#launchwalletservices-method-updates "Direct link to launchwalletservices-method-updates")

From v8.2, `loginParams` is removed from the `launchWalletServices` method. Developers now only need to pass the `chainConfig` as the required argument.

#### Before (v8.1)[​](#before-v81 "Direct link to Before (v8.1)")

Usage

```
do {
  var chainConfig = ChainConfig(
    chainNamespace: ChainNamespace.eip155,
    chainId: "0x1",
    rpcTarget: "https://mainnet.infura.io/v3/${key}",
    ticker: "ETH"
  )

  try await web3Auth?.launchWalletServices(
    W3ALoginParams(loginProvider: .GOOGLE),
    chainConfig: chainConfig
  )
} catch {
  // Handle error
}

```

#### After (v8.2)[​](#after-v82 "Direct link to After (v8.2)")

Usage

```
do {
  var chainConfig = ChainConfig(
    chainNamespace: ChainNamespace.eip155,
    chainId: "0x1",
    rpcTarget: "https://mainnet.infura.io/v3/${key}",
    ticker: "ETH"
  )

  try await web3Auth?.launchWalletServices(
    chainConfig: chainConfig
  )
} catch {
  // Handle error
}

```