Install Math Wallet
http://www.medishares.org/wallet/en/
Import EOS Wallet
Select EOS Wallet, enter EOS private key (the private key generated from EOS Mapping, the EOS Wallet cannot be imported if the EOS amount of the mapped account is less than 1)
Select default account and enter transfer password.
You can see your EOS wallet and account name after successfully importing it.
Click the 【DApp】at the bottom of the interface,find and click Dapp【EOS Block Producer Voting】in the DApp list.
Use the default setting and then click 【Save】.
Search and select the block producer you want to vote for, click【Vote】and enter password to complete the voting.
If you have any questions, you could join our Telegram for help:https://t.me/mathwallet