I have spent about 8 hours over the past 2 weekends trying to get from this firmware version: "HD2.08.12.70"
I am now at ‘622’, but as 8 hours suggests it's been a slog!
As with notnat my Hero2 had been working fine; bought December 2012, used a couple of times to see how it worked (it is my first Hero) stored until April, used once and then got out again in May, when it would not reliably switch on.
Getting a charge was the first major problem.
This is (roughly) what I had to do.
1) remove the battery
2) insert the USB cable into the camera from your computer. the red light will flash weakly. Don’t press ‘P’, if you do start at number 1) again.
3) remove the cable
4) insert the battery
5) connect the cable, the red light glows strongly. If you are lucky.
6) wait...until the battery is charged, the red light goes out. The Hero2 has a charged battery.
6* you may need to have the SD card out for some or all of 1,..,6. This and some advice on YouTube that didn’t work burnt 6hours, not including waiting for the battery to charge!
Getting the charge seems crucial, the numerous failed attempts appear to result in a discharged battery, instantly!
7) start following the firmware upgrade instructions from Cineform. Let’s assume it’s installed.
Check the link to the PDF instructions.
This is where things can get interesting.
If you are lucky the full upgrade to ‘622’ will proceed.
I wasn’t lucky.
The firmware was downloaded and placed on the SD card, but the Hero2 was not restarting and installing the upgrade.
Getting the Hero 2 to take the firmware upgrade needed an unsupported procedure which I found here
Even this example isn’t exactly what I experienced. The video shows a v70 upgrade, I did see this, followed by a v622 upgrade. I also had to try a couple of times to get the Hero 2 two switch on with the ‘S’ button pressed.
The good news (so far) is that the Hero2 is now on ‘622’ and will switch on/off reliably and I managed to do a time lapse session successfully this afternoon. Normal service appears to have resumed.
I had reached the point where I was checking the Amazon return procedure and was ready to start explaining to them that even if the Hero2 had been bought months back it was barely used and my deal was with them not GoPro support in the USA.
The final lesson out of this is that *GoPro should be documenting the update process*, including the less than happy paths and supporting them, not leaving customers to hope that someone on Youtube has an answer.
If the camera had been sent back (i.e. I hadn’t persevered or stumbled on useful advice) I would not have taken a replacement and would have spent another 8 hours letting anyone who bothered to read reviews how unreliable I thought the Hero2 was.