There was a 2.03.20 version … but it mostly just a maintenance release which removed online services that were no longer supported and fixed some issues with online services which are most likely no longer supported and no longer work 7 years later.
Here’s a direct download link to it below… but, personally speaking, if everything is working fine for you now, then i wouldn’t bother updating.
But if you do decide to update the firmware and something goes wrong then you’ll have to find firmware 2.02.32 and attempt a firmware rollback.
The decision is yours … i take no responsibility