Hacking Restore NAND backup to set up Caffeine and emuMMC

demsondjoo

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Hi all, I am thinking of restoring/downgrading my switch from 8.1.0 to 3.0.2 (my previous clean nand backup) and set up Caffeine and emuMMC after that.
Is it worthwhile? and if it is is what are my steps to do it correctly?

*edit: i have been using auto rcm since i upgraded a few times visa chourdujournx, so i think my fuses are not burnt. I also have no intention of going online. Just thought that the idea of caffeine is good so i don't have to load rcm if i somehow let my switch run out of battery.
 
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P3T3

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Don’t forget you need network to start exploit so sometimes may be better using rcm!
 

Lacius

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I would recommend using what you already have. There's no reason to complicate the setup when AutoRCM and fusee gelee more than suffice. Having to coldboot into sysNAND, load PegaScape, and load your emuNAND is in my opinion more cumbersome than merely loading a fusee gelee payload after a coldboot. I'm also in a similar position as you (low fuse count, AutoRCM).

That all being said, your options are limited if 3.0.2 is your clean NAND backup. That means your fuse count is likely 4, which means you cannot downgrade to anything lower than 3.0.1. Unfortunately, Caffeine is not compatible with 3.0.1-3.0.2, and if your fuse count is 4, you would have to update to 4.0.1-4.1.0 to use Caffeine, making your fuse count 5. If Caffeine is very important to you, then this is a fine choice, but you would then be locked out of 3.0.1/3.0.2. An untethered coldboot exploit could, in principle, be released for 3.0.2 and lower in the distant future, and 4.0.0 and higher are highly unlikely to be able to get an untethered coldboot exploit.

In summary, you would probably be locking yourself out of a future untethered coldboot exploit in order to use Caffeine now.
 
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demsondjoo

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I would recommend using what you already have. There's no reason to complicate the setup when AutoRCM and fusee gelee more than suffice. Having to coldboot into sysNAND, load PegaScape, and load your emuNAND is in my opinion more cumbersome than merely loading a fusee gelee payload after a coldboot. I'm also in a similar position as you (low fuse count, AutoRCM).

That all being said, your options are limited if 3.0.2 is your clean NAND backup. That means your fuse count is likely 4, which means you cannot downgrade to anything lower than 3.0.1. Unfortunately, Caffeine is not compatible with 3.0.1-3.0.2, and if your fuse count is 4, you would have to update to 4.0.1-4.1.0 to use Caffeine, making your fuse count 5. If Caffeine is very important to you, then this is a fine choice, but you would then be locked out of 3.0.1/3.0.2. An untethered coldboot exploit could, in principle, be released for 3.0.2 and lower in the distant future, and 4.0.0 and higher are highly unlikely to be able to get an untethered coldboot exploit.

In summary, you would probably be locking yourself out of a future untethered coldboot exploit in order to use Caffeine now.
Got it! Will stick with what I have now then. Thanks alot
 

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