Hacking Switch v1 without EMMC NAND module

mvmiranda · Jun 19, 2020

Hello all,

I have a Switch v1 with a missing EMMC module and since I have some laying around I decided to create a NAND based on a 5.1.0 donor using TegraRcmGUI and HacDiskTool.
I was able to perform everything without a hiccup but I noticed 3 things:
1) The console does not boot in the "original sysnand" (I dunno if this is expected)
2) Lockpick_RCM fails on keyblob 0 through 5
3) WHen trying to inject Atm the Atm logo blinks once and quickly disappear. The console does nothing afterwards!

I can inject Hekate and checking the fuses I have 11, which should mean the console was either on 9.0.0 or 9.0.1.

I wonder having 5.1.0 as a donor and 11 burned efuses would cause this behavior.
Is there anything else I could try?

Thank you!

mvmiranda · Jun 19, 2020

Some progress...
A friend of mine asked me some files (prod.keys, fuse_cached.bin, tsec_keys.bin and BIS_keys.txt) and generated a 9.2.0 NAND for me.
I used the same HacTool method and now the console boots the Nintendo logo on sysNAND and freezes before the Switch logo and when I inject the Atm payload it completely loads Atm and Sept logos and freezes as well.

At least it's a progress!

Is there anything else I could try before throwing the towel?

Thanks!

scandal_uk · Jun 19, 2020

Did the 9.2.0 NAND work before you used your “HacTool method”?

Clearly “without a hiccup” was an overstatement?

mvmiranda · Jun 19, 2020

scandal_uk said:
Did the 9.2.0 NAND work before you used your “HacTool method”?

Clearly “without a hiccup” was an overstatement?

No hiccups until it chocked...
I know the console worked before but the previous owner (a friend of mine) lost the original EMMC so I'm trying with another EMMC module.
He doesn't remember what FW the console was but by the fuses count I know it's 9.0.X.

The 9.2 donot NAND I tried was sent by another person on a group I'm on so I don't know the "conditions" of the donor he used, but the behavior changed on the console after flashing it.

I, clearly, don't know how to create a NAND from scratch and I'm trying to use ChoiDujour on my PC throughout the day with no success... I'm kind of lost, actually.

scandal_uk · Jun 19, 2020

mvmiranda said:
I, clearly, don't know how to create a NAND from scratch and I'm trying to use ChoiDujour on my PC throughout the day with no success... I'm kind of lost, actually.

I don't believe ChoiDujour on PC can help you at this point, it doesn't support newer firmwares

mvmiranda · Jun 19, 2020

scandal_uk said:
I don't believe ChoiDujour on PC can help you at this point, it doesn't support newer firmwares

I read somewhere on the countless sites I've been on today that there are "unofficial" vesions of the ChoiDujour that DO work on newer versions... I've been trying to find it with no luck.

Raugo · Jun 19, 2020

Do you have a backup of the emmc or at least the prodinfo? Without it is imposible to launch HOS.

mvmiranda · Jun 19, 2020

Raugo said:
Do you have a backup of the emmc or at least the prodinfo? Without it is imposible to launch HOS.

Nope!
There's nothing for this console... no PRODINFO and no NAND backups at all.

Hacking Switch v1 without EMMC NAND module

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