This shuold be what you need:
http://www.touchpodium.com/2008/04/07/ipswtool-makes-editing-ipsw-firmware-files-easier/
If you can't edit a PDF file's text, it might be scanned file. In that case, if you want to edit it, please use some PDF ocr softwares. PDF ocr software can recognize the charactors of the file and turn them into text files. PDFOCR is a famous, easy-to-use ocr software, and you can try it by clicking the link below.
Any image editing software such as: Photoshop, paint, gimp, etc
You have to edit boot.ini file, but you cannot do it manually. You have to use special software. How to edit boot.ini you can find in google
you could use this piece of software to extract the mxp: http://www.buraks.com/asv/tools/mve.html
change which information? if you mean to edit the sounds contained in it you need some sort of audio studio software like cool edit to edit the mp3, or or if you mean to alter the text information in the id-tag that gets embedded you can right click on the mp3 file and choose file properties and choose audio information you can edit the text associated with the mp3
You can chose a file and edit it
It is not possible from what I know. I looked into this for an easy hack after I restoredy iPod cuz it froze on cydia. Just use limerain.com for 4.1 hack. Actually, it is possible, by downloading the .ipsw file for 2g-4.1 file for sn0wbreeze. You will need iTunes 10. When you get on the .ipsw file press shift + restore on iTunes with your iPod connected to your computer. This will downgrade your iPod or iPhone to 4.0. Hope this helps!
You can use software like VLC Media Player or Sony Vegas Pro to open and edit clpi files.
To edit any file in Unix, use a file editor; there are several, including the venerable 'vi' program or 'vim', pico, nano, etc.
To open a raw file, you can use specialized software like Adobe Photoshop, Lightroom, or specialized raw file converters like RawTherapee or Capture One. These programs allow you to import and edit raw image files taken by digital cameras. Simply open the software, import the raw file, and start editing.
Mac
To convert a PDF file to Guitar Pro format, you can use a software tool or online converter specifically designed for this purpose. These tools can help you import the PDF file and then export it into Guitar Pro format, allowing you to easily access and edit the music notation in Guitar Pro software.