ok so i jtaged my box a year or so ago using this guide i believe
http://www.boxxdr.com/boxxdrjtag.htmlwhich in a nutshell i think means im using aud_clamp and the DB1F1 points. I don't have my original nand but im fairly sure i just get into xellous and can download the raw flash and thats all i need from there right?
So now im a bit lost where i go from here and best programs to use, ive heard of fbuild,bestpig ect but i really need someone kind enough to walk me through this. The nand from xellous will need modified or something right? and a file added for the smc points? i dunno im just lost and don't want to break anything can i get a step by step please

oh and one last thing when i jtaged my box i did the alternate to prevent the fuzes from blowing, when i was researching about how to upgrade my box before this post, i read about how removing the resistor can cause a Error, does that error happen with the alternate prevention method as well? I was just thinking that the solder doesn't seem to be a very reliable thing, and it might be wise of me to go back and just remove the fuse, but this error is scaring me.. i think im on dash 9199 btw i thought i read the error gets thrown during a certain dash update. Is it important to make sure FSD2 boots right away rather than NXE for anything? Sorry im just a bit overwhelmed basically just getting started with really trying to use my jtag, i just installed xexmenu and fsd2 today thats it all ive done lol so any other important tips would be great
again thanks for any help