I have already followed the instruction to upgrade my ETB tokens but how can I verify whether my tokens are really upgraded? I'm still unsure whether it's upgraded. It would be a loss for me in the end if I assume its already upgraded yet really not.

  Once your wallet is open in the Send Ether & Tokens tab you can click Add Custom Token – enter 0x4fE6Ea636aBe664E0268Af373A10CA3621A0B95b in the Address field, ETB in the Token Symbol field & 12 in the Decimals field. From now on you’ll see the correct new Ethbits balance and can carry on transacting and trading like you were before.

   To check if your tokens were correctly upgraded, just click HERE (https://etherscan.io/address/0x4fE6Ea636aBe664E0268Af373A10CA3621A0B95b#readContract) and paste your wallet into 9. balanceOf and click query, you should see your tokens below there, if not, repeat the process again.