After the Jakarta upgrade, does the wallet still n... @MadFishCommunity

Yes, the wallet still needs to choose a network after the Jakarta upgrade. The new protocol version will become the mainnet, but you can still switch networks for testing purposes. This is useful for developers who need to test their applications on different networks, or for users who want to take advantage of different features offered by different networks. For example, the rollup of Ethereum requires network selection in order to use the features of the rollup. This allows users to take advantage of the high throughput and low cost of the rollup while still being able to use the Ethereum mainnet.

You don't have to. The new protocol version just becomes the mainnet. But you can still switch networks for testing purposes, for example.