• Samsung Galaxy Nexus with Ice Cream Sandwich hands-on (video)

    The Galaxy Nexus (formerly referred to as the Nexus Prime) carries on the Nexus torch in spectacular fashion, and we've just spent a few quality moments with one here at the launch event. Design-wise, it's clear that the Nexus S DNA is here, though the rear reminds us most of the Galaxy S II. Those who abhor physical buttons will also be delighted, and while we'd gotten used to the whole Power + Home for a screenshot on the GSII, Power + Volume Down works just fine on this fellow.......

  • Android 4.0 Ice Cream Sandwich now official, tons of enhancements

    PSHax member - Google has taken the stage in Hong Kong to make the next version of Android OS, nicknamed Ice Cream Sandwich, a thing of reality. Better known as Android 4.0, the update offers a massive redesign to the user interface and adds a plethora of new features. Some of the highlights include an NFC-enabled feature called Android Beam, offline search in Gmail, new lock screen features and a fancy unlocking method called "Face Unlock," which uses facial recognition to ensure strangers can't use your phone without permission. Ice Cream Sandwich also includes enhancements in.....

  • Motorola RAZR to get updated to Ice Cream Sandwich in early 2012

    Mutricy mentioned that while the company's new flagship device was designed for Gingerbread, plans have been set to introduce the latest version of Android in the start of 2012, with a more precise date naturally on its way. Given past experience, however, it's probable that the unbranded version of the device will get the refresh ahead of the Droid RAZR on Verizon, so US users may need to exercise a wee bit of patience here. Regardless, it's time for the competition to step up......

  • HTC Rezound render resoundingly revealed- wait next November 10th

    Hark! The first renders of the HTC Rezound have appeared online, thanks to some of the device's cases going up for pre-order. You can see that, like the Sensation XE, the phone has red-glowing soft keys -- a bit of a departure from HTC's traditionally conservative design language. If you recall, the phone formerly called Vigor is said to have a 4.3-inch screen, a dual-core 1.5GHz processor, 1GB RAM, Beats Audio and an 8MP rear camera.....

Previous Next

Hacking is not enough: Reverse engineering the PSP

Posted by Mohd Khairun Nasir Saadi On - - 0 comments

Interesting job being done bythis guy. He's trying to reverse engineering the old original PSP. I'm not sure what he try to accomplish. Recreate his own PSP hardware maybe :)
The original PSP may be old news but there is an interesting relic of a website (translated) dedicated to the reverse engineering of a PSP (and exploring Saturn?). To determine the true capabilities of the PSP they desoldered most of the ball grid array chips and then hand soldered 157 jumper wires to allow for direct memory access. In later pictures it shows the PSP hooked up to external hardware for on the fly memory modification. Unfortunately the details are sparse and it doesn’t appear as if they will be updated anytime soon because the website has been “deleted and freezed because of spam. may ineffaceable curse prevail on the spammers.” Still this doesn’t detract too much some very impressive soldering.

Google Translated:

Stepping stone to explore Saturn, the moon base was set-up. PSP全体の理解に向け、実質的に何も分からない状況で行った、最初のハードウエア的解析。 PSP for understanding the overall situation we know practically nothing, the first analysis of the hardware. メインボードのチップを取り外し、メモリチップらしいものに配線を強行、157本のワイヤーを手作業でハンダ付けする。 Remove the tip of the main board, memory Chippurashii forced those wires, and wires soldered by hand 157. 端子は0.8mmピッチ。 0.8mm pin pitch. 内蔵されたNAND flashメモリからデータを読み出すための試み。 NAND flash built in an attempt to read data from memory.

* 本来であれば、専用基板を作成しBGAパッケージをリボールして実装するのが順当。 If true, create a special board to implement the orderly BGA package Riboru. その方法とここで採用した方法を比較した結果、ダメ元で後者を採用。 Comparing the method and the method adopted here is adopted under the latter can not.
* パッケージ内には、NAND flashとDDR-DRAMが内蔵されているとされており、まずは各端子が何に接続されているかを推測することから始まる。 In the package, NAND flash and DDR-DRAM that has been built, begins to guess what that is connected to each terminal first.
* 続いてNAND flashのピン配置を決定する必要がある。 NAND flash then you need to determine the placement of the pin. 容量的・ピン数的に似た品種を参考に、ブルートフォースにより各ピンの意味を理解、アクセスのプロトコルを同定する。 Referring to the variety and capacity similar to a number of pins, each pin understand the meaning of the brute force to identify the access protocol.
* それら結果に基づき、フラッシュメモリの内容を読み出した後、各領域の使用目的やフォーマットを推測。 Based on these results, after reading the contents of flash memory, format and purpose of the estimate for each region. ファイルとして取り出して、ソフトウエア的解析に移行する。 Remove the file as a transition to software analysis.
* これにより得られた結果は、初の自作ソフトの作成に大きく貢献している。 This results has contributed significantly to the creation of the first homebrew.


Leave a Reply


GeostigmaShop Hot Items