How to swap ERC20 BNB tokens into BEP2 BNB tokens native to Binance Chain
Binance Chain launched its Mainnet on April 23, 2019.
If you still have ERC20 BNB (your receiving address starts with 0x) you need to send them to your ETH deposit address on Binance.
Search for Binance on Trust Wallet and enable the new receiving address. You can then withdraw your BEP2 BNB tokens back to your new BNB Wallet address
We highly encourage you to deposit your ERC20 BNB and withdraw your BEP2 BNB within 90 days of the mainnet launch.