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3.03 PSP Downgrade

So you're looking a 3.03 PSP Downgrade? well this article may help you out. First and foremost, you need an unpatched copy of Grand Theft Auto Liberty City Stories. There is no other way that you can downgrade any PSP over 2.81 without it. Now for some reason people don't seem to appreciate this fact and will spend hours upon hours searching the Internet for other ways to downgrade with out the gta. Let me save you time, there is no other way to downgrade any PSP above 2.81 with out the unpatched gta.

In late 2005 a vulnerability was found in the way the PSP version of gta: Liberty City Stories processes saved games. In December 2005 software was developed to execute unsigned code on PSPs with firmwares 2.00 through 2.60. In April 2006 firmware 2.70 was released and patched the exploit, however, as of January 25, 2007 it was discovered that Sony did not completely patch the exploit, and unsigned code may be run on 3.03 firmware, a 3.03 downgrader was released 3 days after the exploit was found. Also, new copies of gta: Liberty City Stories patched the exploit as well, preventing it from being executed on other firmware versions. Since then homebrew has advanced to the point that a copy of gta: Liberty City Stories is no longer needed to run unsigned code except on firmware versions 2.81 to 3.03. Sony has now blocked the gta exploit for good with the release of the 3.10 firmware update and later subsequent firmware udates.

So how do I know if I have the right gta for a 3.03 PSP downgrade? Well, it's quite simple really. Get your copy of gta Liberty City Stories and put it in your UMD drive, now scroll to the game folder and you will see a "UMD update" option. Now, if this says "Update 2.00" then you have an unpatched version, if it says "Update 2.60" then you have the patched version which is no good for a 3.03 PSP downgrade.

Now all you have to do from here is find the 3.03 downgrader, there are a couple of versions around the Internet which you can download and these are relatively easy to follow . Just be sure you download the software from a reputable place as there are some scumbags around who have put fake downgraders up on the Internet so unsuspecting people can download them and brick their PSPs.

Also, make sure you to follow the steps exactly as they are described, this is very important. If you do one thing out of place, or if you put a file and the wrong place you could effectively brick your PSP, so it is vitally important that you follow instructions when you do at 3.03 PSP downgrade.

posted by 16055 @ 3:26 PM 0 comments

Controlling CNC and You

Since we are dealing with machines that do work for us, we need to control those machines somehow. We need to control them for safety reasons as well. If you give a machine improper commands it can easily get out of control and cause harm to you or the part you are machining. We want to give appropriate commands to our machines, at appropriate times so they are not "out of control".

The language that these machines use is called G-code. G-code has been around since the early 60's. There are a number of variations of G-code, but most are very similar to one another. See the previous section for a sample of G-code. We will need to use a computer to talk with our CNC machine. Our computer will send signals to our CNC machine. In-between our computer and our CNC machine sits a controller. A controller converts commands into signals that are used to control the motion of our machine.

As these signals are sent out of the controller, they go to either stepper or servo motors. This is how we create motion. These motors drive our various axis on our CNC machine. While we are moving our axis, there is generally a cutting tool of some sort removing material. This is the machining process coupled with CNC.

Here is a brief description of the two types of motors generally used in CNC:

Stepper motors:

Simple design

easy to use

Generate torque at low rpm

Do not know their position in relation to the program

Servo Motors:

Generate torque at high RPMs

Generally need gearing of some sort to be effective

More sophisticated

Can maintain their relative position, thus, they can be more accurate

Machine Controllers

Controllers generally stand alone near the CNC machine. They act as a translator between your control computer and your CNC machine. Generally, they add quite a bit of cost to a CNC machine as well. Controllers can cost anywhere from $1000-$20,000 or more depending on their sophistication.

posted by 16055 @ 10:15 AM 0 comments