Canon 400d Firmware !link! -

Then, the dreaded error appeared: ERR 99 . The shutter would fire once, then freeze. The mirror locked up. The only cure was yanking the battery. Leo tried three lenses, two batteries, one desperate prayer. Nothing worked.

The forum woke up.

He mounted a 50mm f/1.8 and pointed it at his window. The live view—impossible on stock firmware—appeared on the LCD, grainy but alive. He pressed MENU. A hidden world opened: scripts for star trails, bulb ramping, even a crude “predator vision” false-color mode. canon 400d firmware