I cannot find a firmware for this product and when I first bought it I was led to believe that the DH-20A3H firmware was fully compatible with the unit. This may be true as I have not found fault with it yet but for some weird personal reason I find it difficult to use firmware that were not initially made for a particular unit so I contacted Liteonit support and they responded with this quote.
"" Dear Sir or Madam,
Thank you for contacting LiteON IT Support.
Sorry to tell you that we don`t have firmware of DX-20A3H.
We have not release all of our products information on our website, only some
The model of DX-20A4H have the similar function and installation steps of DX-20A3H.
you can get the reference information from link:
Welcome to email us if you have any other question.
As anyone should be able to see, this indicates, if read with leniency, that possibly the DX-20A4H firmware MAY BE compatible with my unit, but again I don't like fully believing what I read from a support person unless there is some kind of back up in black and white on a website somewhere. I already know that the DX-20A4H firmware from Liteon DOES NOT allow upgrade of my DX-20A3H unit so I'm in a quandry about whether or not to try the flash routines available here.
Also, I would like if anyone has the original firmware for the DX-20A3H05C, please make it available in some fashion. I have responded to the above Liteon email requesting clarification but I doubt I will get any, as I was less then enthused with the obscurity involving their last response.
Thank you all, very much