XDA Forum Member necro_ may be new to Android development, but don't be fooled by this inexperience---he is a professional software engineer with experience in Symbian OS and Windows development. After rooting his first Android phone less than a month ago, he found the whole process, in his words, to be a "pain in the asre." Surprised with no easy solution for creating or editing YAFFS2 images, he set out to remedy this.

Necro_ started to working with the unyaffs code, and put together a GUI app that listed an images contents. Once he got that working, he kept developing to allow for extracting files and then creating images. The fruits of his labor is Yaffey---a GUI utility for reading, editing, and creating YAFFS2 images in Windows written in Qt 4.8.1. The utility is still very young, but necro_ hopes that others will find it to be a useful utility. He hopes to get feedback from users such as feature requests and bug reports to help him better his utility.

If this is just the tool you have been looking for, head over to the original thread and its Google Code page.