Help: Firmware upgrade of UA40D6600

[UA40D6600L3D]

Hi Community,

I'm looking for a help in upgrading my TV UA40D6600. Currently, running on GASDAAC_001013 and firmware version 001013.
I tried upgrading the firmware to 1025.0 but as soon as I start upgrading, after restart it starts upgrading and after 3% TV restarts and shows firmware upgrade failed.
Can anybody also had this problem if yes, how did you solve it.
Also, I want to know what is the significance of GASDAAC as I was trying to upgrade with GASDEUC_1025.0

Help will be much appreciated.

Thanks//

[hamidreza4u]

I have so this problem
Anybody can help us?

[moreins]

Hello.
I also require to downgrade a unit with T-GASDAAC.
Downgrade thread viewtopic.php?f=22&t=4199 says its not supported at the moment.

WIll appreciate your help