Homebrew ARM9Loader -- Technical Details and Discussion

[Shadowtrance]

It's not something I've implemented, but it's entirely possible. Just get a thread running that you can access from ARM11 usermode (Or through svcBackdoor).

Ahh fair enough. You're still a tease, just because.

 

[Selver]

There's still at least one valid use-case for having an emuNAND instead of booting into a CFW sysNAND all the time, wear and tear on the NAND memory.

Really, this shouldn't be a primary concern. eMMC includes automatic remapping of bad blocks. So, even if a given sector goes bad, it will get remapped. There's some exceptions to this rule, but tending to be manufacturer implementation specific, and even then rare. (e.g., CMD30/CMD31).

Spoiler: Samsun SLC claims

Samsung's (SLC) MultiMediaCards have an endurance specification for each sector of 100,000 writes (reading a logical sector is unlimited). It would take over 100 years to wear out an area on the MultiMediaCard on which a files of any size (from 512bytes to capacity) was rewritten 3 times per hour, 8 hours a day, 365 days per year.

Spoiler: Toshiba Warning for MLC

Data Retention
The data in memory may change after a certain amount of storage time, due to charge loss or charge gain.

Read Disturb
A read operation may disturb the data in memory. The data may change due to charge gain. Usually, bit errors occur on other pages in the block, not the page being read. After a large number of read cycles (between block erases), a tiny charge may build up and can cause a cell to be soft programmed to another state. After block erasure and reprogramming, the block may become usable again.

 

[FenrirWolf]

I remember people would express worry about NAND wear and tear back in the Wii modding days too. Years later, I wonder if there exists a single person who had their internal filesystem fail on them because of that.

 

[daxtsu]

Really, this shouldn't be a primary concern. eMMC includes automatic remapping of bad blocks. So, even if a given sector goes bad, it will get remapped. There's some exceptions to this rule, but tending to be manufacturer implementation specific, and even then rare. (e.g., CMD30/CMD31).

Spoiler: Samsun SLC claims

Samsung's (SLC) MultiMediaCards have an endurance specification for each sector of 100,000 writes (reading a logical sector is unlimited). It would take over 100 years to wear out an area on the MultiMediaCard on which a files of any size (from 512bytes to capacity) was rewritten 3 times per hour, 8 hours a day, 365 days per year.

Spoiler: Toshiba Warning for MLC

Data Retention
The data in memory may change after a certain amount of storage time, due to charge loss or charge gain.

Read Disturb
A read operation may disturb the data in memory. The data may change due to charge gain. Usually, bit errors occur on other pages in the block, not the page being read. After a large number of read cycles (between block erases), a tiny charge may build up and can cause a cell to be soft programmed to another state. After block erasure and reprogramming, the block may become usable again.

I'm still a little wary of any flash memory, to be honest, especially since I had a solid state drive die on me like 4 months back (and it was maybe a year or two old, hardly past the expected life-time of the thing). Lost all the data (my own fault for not keeping backups, I know), and had literally zero chance to recover it. Plugging it in to other PCs, enclosures, etc., it never showed up. :s

 

[cooroxd]

What brand was your ssd so I can take note and stay away from it

 

[daxtsu]

What brand was your ssd so I can take note and stay away from it

OCZ. Not the best brand, but it did the job. They're out of business now anyway, iirc.

 

[OctopusRift]

Note. Only reflash ctrnand when reflashing NAND back...

P.S. Rip O3DS CFW and A9LH

 

[Mrrraou]

Note. Only reflash ctrnand when reflashing NAND back...

P.S. Rip O3DS CFW and A9LH

I told you... will you listen to me one day?

 

[Suiginou]

Note. Only reflash ctrnand when reflashing NAND back...

P.S. Rip O3DS CFW and A9LH

 

[OctopusRift]

Thanks babe! Maybe my N3DS will fare better

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I told you... will you listen to me one day?

Why would I listen to a cute kitty.

 

[Toiry921]

Guys is there anyway other than Recovery mode to restore a 3ds that downloaded all the updates then wont turn on after reboot.

 

[Suiginou]

Guys is there anyway other than Recovery mode to restore a 3ds that downloaded all the updates then wont turn on after reboot.

Hardmod, yes.

 

[Toiry921]

is it weird that native firm installed and all CIA files installed but still bricked, I used the same pack on my other 3ds and worked fine.

 

[Teoz Benny]

Hey I have a new 3ds xl eur, does anyone please have a picture or guide on how to hard mod the new 3ds xl as I can only find how to do the old 3ds and xl. Thanks

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I want to do a hard mod anyways so I can always flash my nand back if im testing stuff etc. Oh and I used to jtag 360,s way back when it first came about so I can solder ok, Just looking for a nice guide or diagram to work from.

 

[dark_samus3]

Hey I have a new 3ds xl eur, does anyone please have a picture or guide on how to hard mod the new 3ds xl as I can only find how to do the old 3ds and xl. Thanks

go to 3dbrew.org, scroll down to the bottom, click on hardware, find the picture that corresponds with your model

 

[Teoz Benny]

Cheers mate.

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I see that people solder onto the board and then the other end Is a microsd adapter.. Can I not just use another type of connector like a microsd usb socket or something?

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I got the diagram of the board now so thanks for that.

 

[Apache Thunder]

Good news! My o3DS XL survived the trip to 2.1 land. Got a scare at first since it seemed to black screen brick. But I just booted without SD card inserted and then it booted up. (I had to delete Home Menu extdata)

I got my OTP and will now get it restored back to 9.2.

 

[Teoz Benny]

This is all I can seem to find https://gbatemp.net/threads/n3ds-nand-backup-possible-i-hope.381506/ so I assume I need to buy a card reader before I can hard mod then? Thanks again

 

[Audioboxer]

Just want to add my success story in here as well. N3DSXL, went down to 2.1 okay, a9f.bin dumped at 256 bytes. 3DS would not boot with my 128GB card, nor would it recognize it after a clean format (FAT32). Had to use Nintendos provided 4GB one.

No hard mod, *phew*.

 

[WilliamO7]

Just want to add my success story in here as well. N3DSXL, went down to 2.1 okay, a9f.bin dumped at 256 bytes. 3DS would not boot with my 128GB card, nor would it recognize it after a clean format (FAT32). Had to use Nintendos provided 4GB one.

No hard mod, *phew*.

Good to hear
More people can now ascend to the A9LH master race

Or at least the OTP master race for now...