PS3 wasn't hacked for a long time. All the fun happened on 3.41 firmware, and then a couple of months after we got custom firmware for 3.55.
On 3.56 firmware and higher, this was blocked. On 3.55 with the help of a dongle like Corbra/TrueBlue you could run custom applications on your console that allow you to play region free blue ray movies, older games, games with a higher software version than 3.55 from a harddrive, media players etc etc. Of course not many people can do it as they are above 3.55 firmware!
There are 2 solutions available. CFW (Custome firmware) and Optical Drive Emulators.
In 2013 they finally figured out how to upgrade 3.55 custom firmware consoles to higher firmware versions, allowing people to pretty much not need any dongle, and forever be able to upgrade to any new custom firmware. The problem is that you still need to START on 3.55 to join in on the custom firmware fun. To do that, you can downgrade with some effort and tools, certain consoles down to 3.55. Only certain models can be done, and pretty much everything made after 2010 cannot. If you want this done you can either buy the E3 flasher, or we offer a service currently for $99.99 to do this for you (add $20 for us to put you on the latest CFW).
Models supported by our downgrade service:
Check back of console to see Model number. If we list 'x' that just means that the letter number after what we wrote doesn't matter. For example, CECH 4xxx means it covers CECH 4000A, CECH 4004B, CECH 4002C, etc etc etc
Optical Drive Emulators (PS3 ODE):
We are not stocking ODEs anymore. They where blocked early 2014, and since then they have been updated but the insrtuctions required to use them are just too hard for most people. Then they where blocked again, and extra hardware is now needed. It's just too hard of a solution compared to CFW. We know it works on more models, but you can sell your console and buy a compatible console and you will have less issues.