Can work. TWLtool can decrypt and re-encrypt a NAND image. But NAND restoring without hardmod is considered to be dangerous as well¹. If there is any data to recover in the NAND image: This can be done safely with ninfs on a computer. No need to flash it onto another mainboard with the risk of bricking it as well.Ok, so your hardmod doesn't working is a little bit scary for me xd
I haven't done de hardmod, because I was busy with other stuff and that, but at this point I'll try my best.
Also, I got a little theory here, listen (or read xd):
Since I've a backup of my NAND, and with the tutorial I've been following, this guy (that made the tutorial) decrypted his NAND, that got me thinking... "If the hardmod doesn't works, why I don't decrypt my nand, and encrypt it in the other mother board's code"
What do you think? Do you think it can work? To use it like the last resource
Concerning the hardmod: I tried my best but failed. Not a bit surprising. I'm not good at micro-soldering with my shaking hands (though it is surprising that R113 simply disappeared). Since I see no damage like ripped solder pads on the mainboard I will try again once replacement resistors arrive – this will take some time (weeks) because ordering some resistors for 1.2 cents (yes, about one cent) a piece is nonsense. Once I need something else from the electronics seller, the resistors will be part of the order.
No big hopes though. Soldering DAT0 is by far the hardest part – even if I get the resistor for CLK in place.
Currently my bad test DSi shows 0000FE00 as well (not surprising since CLK is missing and it can't reach the NAND).
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In order to find out what is happening with unlaunch (un)installer it would be really nice if somebody experienced in soldering/hardmodding would help out here.
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¹ I've done NAND restore of a modified image on my test console and nothing bad happened. But this does not mean anything. Not worth the risk since everything can be done with HiyaCFW/SDNAND more easily without any risks. This NAND restore with fwtool v1.6.1 was part of testing and I was willing to loose that (bad condition) console – as can be seen now that I "successfully" bricked it on hardware level.