How to Swap legacy USDC to upgradable USDC
This is a guide on swapping legacy USDC to upgradable USDC with the ratio of 1:1 for the users who bridged USDC tokens before November 23rd, 2023.
To swap your legacy USDC to the new upgradable USDC, please follow the guide below.
Approve legacy USDC tokens
Visit the legacy USDC smart contract on Kromascan or Kroma Blockscout.
Click 'Contract' tab and then click 'Write as Proxy' button.
Connect your wallet by clicking 'Connect to Web3' on Kromascan or 'Connect Wallet' on Blockscout.
Kromascan - Connect to Web3 
Kroma Blockscout - Connect wallet Expand the approve function and input
0x89ebAD587e64b2684B1b2E24e451337DceE72F9efor the spender address and115792089237316195423570985008687907853269984665640564039457584007913129639935for the amount.
Kromascan - input sender address and amount 
Kroma Blockscout - input sender address and amount Click 'Write' button to approve the usage of your legacy USDC token for the swap contract.
Kromascan - Write the approve transaction 
Kroma Blockscout - Write the approve transaction
Swap legacy USDC tokens to upgradable USDC tokens
Visit the USDC swap contract on Kromascan or Kroma Blockscout.
Click 'Contract' tab and then click 'Write as Proxy' button.
Connect your wallet by clicking 'Connect to Web3' on Kromascan or 'Connect Wallet' on Blockscout.
Kromascan - Connect to Web3 
Kroma Blockscout - Connect wallet Expand the swap function and click 'Write' button to execute the swap. This will swap all of your legacy USDC tokens to the new upgradable USDC tokens.
Kromascan - Write the swap transaction 
Kroma Blockscout - Write the swap transaction
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