^^ CLICK HERE FOR LINKS TO ONLINE STORES ^^ VIDEO IS FROM MANUFACTURER. **YOU CAN NOT HOST CHALLENGE LOBBIES ON JAILBROKEN PS3’S BECAUSE SONY BLOCKED ACCESS TO PSN. IF YOU WANT ONLINE, YOU HAVE TO BE ON LATEST FIRMWARE BUT YOU LOSE JAILBREAK.** This video shows that the E3 Card Reader can put the PS3 in FACTORY SERVICE MODE. All you have to do is put the modified 3.41 PUP and Lv2Diag.self files onto a USB flash drive. Method of downgrading is the same as PS Jailbreak…instructions can be found online. It may not show 3.41 but all you need is “SERVICE MODE”. Once that happens you can use those previously leaked DGF.rar file with the modified 3.41 PUP and the two .selfs and just follow the normal steps of downgrading and turning off service mode! “Hello everybody, we are E3Diy team, what we got E3card Reader’s authorization, and made the firmware upgrade for PS3 break. Prior 3.5proof PSN world debut is the first time we try, and this time, we will bring you a free gift heavyweight: 3.5 unlimited Downgrader. Video and upgrade the firmware can be downloaded from this page. The extracting archive password is iLoveE3. Firmware upgrade method: 1. E3card Reader into your PC. Open Windows Explorer, and wait E3Upgrader letter appeared; 2. the compressed package to upgrade the firmware directly drag and drop or copy E3Upgrader, waiting for blue light, red light to stop blinking; 3. unplug the E3. At this point, to complete the upgrade of the entire Downgrader function.” Download …
E3 Card Reader 3.42, 3.50 and above Downgrade for PlayStation 3 PS3 (TUTORIAL & BUY inside)
There is no official downgrade available for PSP or any other device, downgrading your device from an upgraded version will fall under the section of jailbreaking only. As downgrading your device is complicated as jailbreaking your device.