3ds nand issue, hardware problem, and NAND Backup

Hi!, I have a question about a friends 3ds that needs fixing. This 3ds was a preproduction unit with a rare 3d tech demo and we are looking to dump the game. This game was only accessible through the 3ds dev menu. He did a hard mod to dump the nand to his computer but afterwards, accidentally damaged a trace that connects to the nand (as seen in the photo). We have the nand backup but no key to decrypt the backup. We were thinking we could get the key by somehow making the 3ds boot to GM9, but the 3ds hasnt been hacked yet. We were also thinking that we could do the hardmod to connect the 3ds to the computer again, but I dont know too much about that mod or if you can decrypt the nand through read/write on a computer. What are your suggestions? Heres the image: https://ibb.co/h8d1cN3

Is the nand required for the 3ds to boot? or can it be emulated via the sd card?

Also is there any method of decrypting the nand without a key or GM9? Or can GM9 be accessed without the 3ds's nand chip in tact?

Heres the hardmod in question:


and I was also wondering about emunand, can the 3ds work with emunand and have the regular nand damaged?

One last thought: Where are the nand keys stored? and if we could desolder the nand on the board and possibly the other chip with the keys (the cpu itself I assume) could we get this to boot on a different 3ds motherboard?

 

Whats SeedDB? And will it require a key to decrypt it? Also tysm for your input!

 

Thats only for retail games right? This is an unreleased game only available through the 3ds dev menu, Heres a video for reference:

 

Is there any better way I can contact you in case of the situation? also would I try to dump titles like normal with a seeddb file and the dev apps should pop up anyway?

 

How do I use ninfs? I have a Mac and I downloaded the latest version and all required according to the readme file.

 

Sounds good, thx. I looked into the commands and everything for terminal but I don't know where to put the nand.bin so everything will work. Keep in mind, I only have the nand.bin and nothing else

 

Also, how do you get the GUI to work? Id prefer that over using terminal

 

I always get the error "no module named _gui"

 

Yes. We mostly got out of touch, but recently started to work on the project again.

 

Ok: I just got it to work, But I think I need the OTP file, or if not, its telling me I need essential.exefs if I don't have the OTP file. Also what do I do from here? (look at image), Im not sure what to click or where to go to proceed.

 

LMK if you can find a way to get GM9 running without Boot9strap, ill also look into the situation. Ill PM you the nand if you want to see if you can get that working, but I think it requires the keys sadly