Here is an update from the E3 team: 2011-10-25
Lots of buyer already got e3 flasher limited, most of them install e3 flasher and downgrade well. But few users get problem, here we list and give solution.
1: Backup PS3 bios failed. Generally error code is 10001100. This is e3 flasher not works at all because installation wrong. The main problem is the installation of clip not correct. Here
is a video download link, to show how to install CLIP correctly.
2: Some mainboard can't install clip well. Some mainboard like 2004A is diffirence with others. Here
is correct installation of clip:
3: Samsung NOR flash can't backup successfully, please wait our update of e3 fw.
4: In step 4, you need remove all usb device.
5: In step 5, when the screen display to prompt you connect usb cable, you need unplug PS3 power cable immediately and don't follow requirement of screen showing.
6: Some user don't know what it is downgrade dog on step 6 in the relegation flow manual. The simple way is get an e3 card reader.
7: After you downgrade to 3.55, you can install any .pkf file , you can upgrade to 3.73 by network or USB DISK . But can't insta ll other 3.55.PUP file.
Also I'm getting my E3 flasher soon, so I'll tell you guys what I think of it in a couple of days.