If you have an ATMega16A modchip PS3 Jailbreak device and that you still have no luck upgrading it to the latest payload available, then i recommend you to visit this useful website. It has been created by some members at Elotrolado which they originally started it as a forum thread discussing about the project. Currently, they have successfully tested NeoJailBreak v1, PS Jailbreak clone and PS3 Stinger to be working with this method.
Did you buy one of those PSJB clone boards with the promise of it being upgradeable, just to find out a few weeks later, it is not ??
Are you tired of waiting for the promised upgrading application ??
Then this is the site you are looking for. We have the solution for at least the ATMega16A based devices, but this could probably be used for other Atmel based devices too.
If you want to bring your dongle back to life, then start reading how to do it, instead of buying another one which only God knows if it will be upgradeable or not until you receive it.
ATMega16A Payload Injector Project