How can i get a software update or firmware for ledn50k610x3d pls ??

simple, ebay

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Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Hi,
here's the spec's for the 50" Model, it shows a headphone output and it will certainly be a 3.5 Jack: HISENSE LTDN50K321UWTS 50 inch 4K Ultra HD Smart LED TV Freeview

Free bush tv software update downloads Try this link to download the firmware. You can get it from the authorized service centre for Bush too. http://electronicshelponline.blogspot.com/

Currently there is not a firmware update for that model.
Here is the user manual in case you need it.
http://hisense-usa.com/support/manuals/50K610GW_us_M_en_man.pdf

Check your settings and also check for a firmware update for your router.

You have the link to the official website of Hisense. So not sure why you had a problem. I am assuming you purchased the TV in USA.

If that is not the case then you may have to go to the Hisense support website in your country. The firmware can make a difference to the local TV type e.g, PAL or NTSC.

If you are in USA then try once again. Type the model of your TV in the field and download the firmware zip file and install as in instructions provided. Hisense Firmware

You can change country by going down the page at the bottom of the Hisense USA site. It is possible no firmware update was available for your country. This means you have to call local Hisense support and restore the original firmware file.