I had a similar problem with my Regza 37X3030DB tv I bought 9 years ago, only ever used it for Sky tv until recently when I discovered digital was gone .. It is now October 2017 , and as I am many years out off warranty I
was just going to buy another TV , but just by chance I come across this post .. very good for me.
I contacted Toshiba UK: + 44 333 227111, and thought nothing to loose , give it a shot , and to my surprise spoke to very helpful customer support , not often you can say that in 2017, no problem , no issue , a smart card was sent to me with in a day with enclosed easy to understand instructions ,which was power off tv , plug in card , start tv , leave for a few minutes, turn off tv , remove plugin card and thats it ..
TV working like new , all digital capability restored ..
When you have uploaded the new updated firm ware to the TV you have to return the smart card back to Toshiba, but incredibly they enclose a prepaid padded addressed envelope
for this purpose .. that is going the extra mile ..
Amazing .. saved me the cost of a replacement TV.. Super ..
Top marks to Toshiba , I would have no issue to buy toshiba products in future as I was so impressed with the product support and customer service which is second to none ..
Well done Toshiba ..an example to all other electronics manufacturers .. Thank you Toshiba..
Thomas White, October 2017