The abbrevation "DEM" most probably corresponds to Developer Engineering Model and was used for Prototypes of Vita Development Kits with the model/generation identifier 3000. (Just like DEM-1000 was for PlayStation Portable Development Prototypes!) Why they skipped the 2000, especially since the Vita was even internally named PSP2, remains unknown though.
The tailing letters like Gxx/Hxx/Kxx/Lxx etc, describe the revision followed by the 3rd & 4th digit of the serial number. The only exception makes the DEM-3000JEC which exists multiple times alongside each model after the Slider Design. Its generation can be identified by the seventh serial digit.
Example: DEM-3000H84
Revisions
| Model |
Date |
Stage |
Serial |
Modelcode |
SubCode |
Motherboard |
CP Board |
SMI String
|
| DEM-3000G
|
2010 |
|
6XYZZZZ |
00-TG930YXK |
|
|
|
| DEM-3000H
|
2010 |
"DVT2" |
6XYZZZZ |
00-TG940YXK |
0x5 |
IRT-001 #04 |
GCP-001 #02 |
0001,0012,0012,0001,0001,2,1,1,1,00.945_20110119_01_E,0.0.4.0_20101207_01_E
|
| DEM-3000K
|
|
"New EVT" |
7XYZZZZ |
00-TG9A0YXK |
0x9 |
IRT-002 #03 |
GCP-002 #02 |
|
| DEM-3000JEC
|
|
|
7XXXXXX |
|
|
|
|
|
| DEM-3000L
|
|
"NEW DVT1" |
8XYZZZZ |
00-TG9B0YXK |
0xB |
IRT-002 #06 |
GCP-002 #03 |
0001,0030,0032,0001,0001,2,1,1,1,00.995_20110606_01_E,0.1.3.0_20110525_01_E,1
|
| DEM-3000JEC
|
|
|
8XXXXXX |
|
|
|
|
|
| DEM-3000P
|
2011-08 |
"NEW DVT2" |
9XYZZZZ |
00-TG9C0YXK |
|
IRT-002 #06/07 |
GCP-002 #07 |
|
| DEM-3000JEC
|
|
|
9XYZZZZ |
00-TG9C0YXK |
|
|
|
|
| DEM-3000R
|
|
|
|
|
|
|
|
|
| DEM-3000JEC
|
2011-09 |
"PVT" |
02XXXXX |
00-TG9D000K |
0xF |
IRT-002 #10 |
GCP-002 #10 |
0001,0044,0048,0001,0001,2,1,1,1,01.000_20110930_01_E/devtool,0.1.8.0_20110920_01_E,1
|
| X |
Area
|
| 0 |
JP
|
| 1 |
US
|
| 2 |
ASIA
|
| 4 |
EU
|
|
|
Serial
A B C Z Z Z Z
│ │ └ Color? (always 0 since all are black)
│ └ Target Area
└ Generation