PSPgo

The PSP Go (model PSP-N1000) is a version of the PlayStation Portable handheld video game console manufactured by Sony. It was released on October 1, 2009 in American and European territories[1] and on November 1 in Japan. It was revealed prior to E3 2009 through Sony's Qore VOD service. Although its design is significantly different from other PSPs, it is not intended to replace the PSP 3000, which Sony will continue to manufacture, sell, and support.

Unlike previous PSP models, the PSP Go does not feature a UMD drive, but instead has 16GB of internal flash memory to store games, video, pictures, and other media.[12] This can be extended by up to 32GB with the use of a Memory Stick Micro (M2) flash card. Also unlike previous PSP models, the PSP Go's rechargeable battery is not removable or replaceable by the user. The unit is 43% lighter and 56% smaller than the original PSP-1000, and 16% lighter and 35% smaller than the PSP-3000.[6] It has a 3.8" 480×272 LCD[13] (compared to the larger 4.3" 480×272 pixel LCD on previous PSP models). The screen slides up to reveal the main controls.

The PSP Go features 802.11b Wi-Fi like its predecessors, but no longer uses a standard USB A-to-Mini-B cable common with many devices. A new proprietary multi-use connector is used for USB connectivity. A suitable USB cable is included with the unit. The new multi-use connector allows for charging and USB similar to previous units, but also allows video and sound output with the same connector (with optional Composite AV cable and Component AV cable), unlike previous offerings which had TV OUT functionality on a separate port to the USB port. Sony also offers an optional cradle for charging and USB data transfer on the PSP Go, similar to previous offerings.


Generation: Seventh
Retail availability
* NA/EU October 1, 2009[1]
* JP November 1, 2009[2]
CPU: MIPS 333 MHz[5]
Storage capacity: Memory Stick M2, 16GB of internal flash memory
Memory: 64 MB RAM
Display: 480 x 272 pixels with 16.8 million colours, 16:9 widescreen TFT LCD, 3.8 in (97 mm)
Connectivity: Wi-Fi 802.11b, USB 2.0 via Media Go Software, Bluetooth 3.0, PlayStation 3
Dimensions:
69 mm (2.7 in) (h)
128 mm (5.0 in) (w)
16.5 mm (0.65 in) (d)
Weight: 158 grams

UMD

UMD Wikipedia

The Universal Media Disc (UMD) is an optical disc medium developed by Sony for use on the PlayStation Portable. It can hold up to 1.8 gigabytes of data. It is considered the first optical disc format to be used for a handheld video game system.

ECMA-365: Data Interchange on 60 mm Read-Only ODC – Capacity: 1.8 GB (UMD)

* Dimensions: approx. 65 mm (W) × 64 mm (D) × 4.2 mm (H)
* Maximum capacity: 1.80 GB (dual layer), 900 MB (single-layer)
* Laser wavelength: 660 nm (red laser)
* Encryption: AES 128-bit

Despite Sony's efforts, the UMD format has been cracked. Using a combination of unsecure firmware and reverse engineering, the Sony PSP can now use a variety of homebrew games, and backup ISO images. Each disc uses a file system whose format follows the ISO 9660 standard. The ISO image can then be stored on a Memory Stick, and run via a special disc emulator program, such as Devhook. The ISO images cannot be burned to UMD discs as UMD writables and burners are not available. The same game will load much faster and become more energy efficient when stored as an ISO image on a Memory Stick as opposed to the original UMD.

Sony has attempted to halt this type of exploitation by updating the firmware. Versions 1.51 and later of the PSP firmware have attempted to patch the exploit. Recent games also come with a 'software switch' that force users to update before the game can be played. This has also been circumvented: some applications for 1.50 report the firmware version as being more recent than it actually is, or firmware spoofing, bypassing the need to update. This has since been fixed by Sony and no longer works. Firmware versions 1.5 to 3.73 have been decrypted and 1.50, 2.71, 3.02, 3.03, 3.10, 3.30, 3.40, 3.51, 3.52, 3.60, 3.71, 3.72, 3.73 and 3.80 (as of Dec2007) have been converted into custom firmwares. These firmwares allow people to run ISOs that they own from their XMB interface in addition to other homebrew available.