Can I withdraw the amount blocked for ASBA bid application?

No, you cannot withdraw the amount blocked for IPO application using the ASBA route.

When you apply for an IPO using the ASBA mode of payment, the bank marks a lien on the application amount and blocks it for IPO. You continue to earn interest on the said amount, but you will not be able to use it unless the hold is lifted.

The IPO application amount lock will only be lifted if you withdraw/cancel or delete the application or if you do not receive an allotment/partial allotment. The bank needs a few days to lift the lien on the amount after the respective events. Subsequently, you can withdraw the amount from the account.