Chosen Solution
How fix this E:91:01 Error Sony HX90V? Thank´s for all. Sincerely. Gil
After reading up on some forums about this error code, I came to the conclusion that a factory reset is necescery. You can perform a factory reset by going to the main menu -> Settings -> Initialise -> Factory Reset. Report back if it works or not!
No, my case. I had done but it still show ssme error.
