Sir, I have tried d useless firmware update for my sony bravia KLV 40NX500 though it doesnt have any problems.
beforee updating, i turned of my tv and plugged in pendrive then powered it on, den i dint see any light on tv and i assumed it was power problem and removed cord and again plugged it in but der was same result, done it several times and finally as der was no result i unplugged pendrive and switched on tv and saw 3 lights blinking(red, green, orange) continiously for unlimited time and tv never gets switched on .....i am afraid now.......my parents would bang me for what i have done.....when i called sony customer care dey said dey would cost nearly 125 $ which is very high to manage for my family. please provide me d soulyion befor my parents would be home. i beg everybody......dont troll me.......its my bad need
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bravia firmware update problem doesnt turn urgent beg