Homebrew [WIP] SafeSysUpdater

[Khangaroo]

Can I downgrade 10.7 using this homebrew?

Yes, but use PlaiSysUpdater.

 

[Akawashi]

I know people ask this all the time... but will there ever be any softmod to downgrade 11.0? (or if anyone is working on it...)
I know it's a common question, but if its possible with a hardmod, then it should be possible with a softmod... maybe find a workaround for the downgrade patch (another way) if Homebrew is accessible, the theoretically, so should downgrading....)
If not, could someone explain how the downgrade process works, and how the patch prevents it please? (if i know this, i may be able to think of an idea that could help dev's build a new downgrader. long shot, but possible.)

 

[Deleted-379826]

I know people ask this all the time... but will there ever be any softmod to downgrade 11.0? (or if anyone is working on it...)
I know it's a common question, but if its possible with a hardmod, then it should be possible with a softmod... maybe find a workaround for the downgrade patch (another way) if Homebrew is accessible, the theoretically, so should downgrading....)
If not, could someone explain how the downgrade process works, and how the patch prevents it please? (if i know this, i may be able to think of an idea that could help dev's build a new downgrader. long shot, but possible.)

Not too sure how it works but first off, wrong thread second off, there is a way it involves a second 3ds that has a9lh and a 5 dollar game on the eshop

 

[gnmmarechal]

I know people ask this all the time... but will there ever be any softmod to downgrade 11.0? (or if anyone is working on it...)
I know it's a common question, but if its possible with a hardmod, then it should be possible with a softmod... maybe find a workaround for the downgrade patch (another way) if Homebrew is accessible, the theoretically, so should downgrading....)
If not, could someone explain how the downgrade process works, and how the patch prevents it please? (if i know this, i may be able to think of an idea that could help dev's build a new downgrader. long shot, but possible.)

No, I don't see where you get this from.

Quite honestly, hardmods have nothing to do with softmods.


Simply put, 11.0 added a minimal version check, making it impossible to downgrade with ARM11 kernel access only (as the system wouldn't install/boot older titles). Hardmods allow you to dump the NAND, then use a known-plaintext attack to inject and restore a NAND backup with an older NATIVE_FIRM, which would allow you to then, do a software-based downgrade.

I assume this recent DSiWareHax grants ARM9 kernel access to dump/restore the NAND (and inject the NATIVE_FIRM in the same fashion), being essentially the same downgrade. However, this can and will probably be patched in the next update, and it'll also make hardmod downgrades impossible (they only have to make it so an older NATIVE_FIRM can't boot newer titles - like they did on 9.6 - 9.5 or earlier NATIVE_FIRMs can't start 9.6+ titles).


Also, having ARM9 access on a higher firmware version would also allow you to run CFW on said high version, making it possible to go directly to 2.1 for the OTP and A9LH, instead of downgrading to 9.2 first.

 

[GerbilSoft]

I assume this recent DSiWareHax grants ARM9 kernel access to dump/restore the NAND (and inject the NATIVE_FIRM in the same fashion), being essentially the same downgrade. However, this can and will probably be patched in the next update, and it'll also make hardmod downgrades impossible (they only have to make it so an older NATIVE_FIRM can't boot newer titles - like they did on 9.6 - 9.5 or earlier NATIVE_FIRMs can't start 9.6+ titles).

DSiWare has full access to the eMMC, but not the 3DS-specific encryption keys. Hence, you can use it to dump the eMMC, run the plaintext downgrade, and restore the eMMC. This is effectively the same as the hardmod downgrade, but without the hardmod.

 

[gnmmarechal]

DSiWare has full access to the eMMC, but not the 3DS-specific encryption keys. Hence, you can use it to dump the eMMC, run the plaintext downgrade, and restore the eMMC. This is effectively the same as the hardmod downgrade, but without the hardmod.

I see. So it only grants access to the NAND. Thanks!

 

[proflayton123]

Can I downgrade 10.7 using this homebrew?

Use PlaiSysUpdater


Sent from my iPhone using Tapatalk

 

[CheatFreak47]

There's only one good use for SafeSysUpdater now, and that's for people experiencing this issue, as this problem does not seem to be present in SafeSysUpdater.

So again if you're experincing a Yellow screen freeze when Opening PlaiSysUpdater from the Homebrew Launcher you should try SafeSysUpdater. (not to be confused with the infamous yellow screen from menuhax)

This yellow screen issue tends to occur on systems that were updated to or above 9.9 with a cart and have a stubbed internet browser.

 

[fikatr]

I know people ask this all the time... but will there ever be any softmod to downgrade 11.0? (or if anyone is working on it...)
I know it's a common question, but if its possible with a hardmod, then it should be possible with a softmod... maybe find a workaround for the downgrade patch (another way) if Homebrew is accessible, the theoretically, so should downgrading....)
If not, could someone explain how the downgrade process works, and how the patch prevents it please? (if i know this, i may be able to think of an idea that could help dev's build a new downgrader. long shot, but possible.)

This is not how kernel works




fikatr.

 

[Akawashi]

This is not how kernel works




fikatr.

ok, thank's for the info.

 

[MonClair]

Hey guys - been searching through this forum trying to find tips and answers to overcome this hurdle in my downgrade attempt. I have the old 3DS model v. 9.5.0-23E, have homebrew on there (for some reason the entry points to launch homebrew won't work, so I use the camera every time). I initially tried using SafeSysUpdater and consistently received the error message: "FAIL Can't get am:u service ... try again :x" I did a bit of reading and found that I should either use the old sysupdater or follow Plailect's guide.

Deciding to go with the latter I now I get to the selection screen, select (Y) to downgrade to 9.2.0 and I get "Checking for am:u... Did not get am:u handle! Attempting svchax..."

And then it freezes - what is the am:u error message and what can I do about it?? Any ideas?

EDIT: reinstalled menuhax a few more times, finally got it working. Solved the issues.

 

[Collasox]

Hi, I tried like 200 times to downgrade a New 3DS with DSI Ware Downgrade and i get the "Checking for am:u... " error code, i've tried formatting, with ftbrony, with PlaySysUpdater, SafeSysUpdater and SysUpdater, and never work, I tried reinstalling menuhax too. I've tried so many times, what can I do? My 3ds is in 10.3 but shows 11.0.

Edit: Upssss, is 10.4, sorry. I thought it was 10.3. Thanks @gnmmarechal

 

[gnmmarechal]

Hi, I tried like 200 times to downgrade a New 3DS with DSI Ware Downgrade and i get the "Checking for am:u... " error code, i've tried formatting, with ftbrony, with PlaySysUpdater, SafeSysUpdater and SysUpdater, and never work, I tried reinstalling menuhax too. I've tried so many times, what can I do? 9My 3ds is in 10.3 but shows 11.0.

DSiWare downgrade downgrades FIRM to 10.4 IIRC

 

[Teun1]

Tried to downgrade, however when it was coming to it ends it says that an error was occured. After that I've thread to turn it off and turn it on, but then it shows an black screen.
What to do now?

 

[Khangaroo]

Tried to downgrade, however when it was coming to it ends it says that an error was occured. After that I've thread to turn it off and turn it on, but then it shows an black screen.
What to do now?

Take out sd, turn on, put back sd

 

[Teun1]

Take out sd, turn on, put back sd

Thanks! Worked

 

[Khangaroo]

Thanks! Worked

You have to rerun the downgrader, too.

 

[Teun1]

You have to rerun the downgrader, too.

Do I? It downgraded to 9.2, as I saw in the system settings.

 

[Khangaroo]

Do I? It downgraded to 9.2, as I saw in the system settings.

Yes, the version shows 9.2, but the firmware is only partial 9.2 since it crashed.

 

[Teun1]

Yes, the version shows 9.2, but the firmware is only partial 9.2 since it crashed.

So I need to rerun it and redowngrade the files?