Try these sites. I downloaded the firmware upgrades and had absolutely no problems. You must install the upgrades in the correct order or there'll be bad trouble.

I run Version 2.50 and to say I'm delighted with my champagne colored Sony is an understatement.

Hope you like yours as much!

The fellow who operates that site is a TA E9000ES guru and if you email him he can help you.
Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.