I recently tried to follow a guide to downgrade to 2.1. In doing so I made a back up, or at least I thought I had, and couldn't get my N3DS upgrade past 2.1. I cart updated to 4.5.0-4U but now I'm stuck and don't really know how to upgrade past this without bricking. I also reformatted my SD Card thinking it would put me back to 11.2.0-35U but it didn't do anything besides clean off the SD Card. Any help is appreciated!
1. did you put anything on the sd card ?. . . you may still be able to recover it
2. did you install a9lh while on 2.1 ? . . . if not its hopeless without a hardmod and a nand backup
edit: i put my foot in mouth
uh, im pretty sure it works. Some other guy did the same thing(something i should had not recommended to him) and he could load Decrypt9 from the -4 browser.
-7+ browser versions requirements are for Homebrew IIRC
The exploit uses 5 different ROP chains based on the browser's version, detected using the user agent string.
3DS System version 2.0 = "Mozilla/5.0 (Nintendo 3DS; U; ; en) Version/1.7412.US"
3DS System version 2.1-3.X = "Mozilla/5.0 (Nintendo 3DS; U; ; en) Version/1.7455.US"
3DS System version 4.0-4.X = "Mozilla/5.0 (Nintendo 3DS; U; ; en) Version/1.7498.US"
3DS System version 5.0-7.0 = "Mozilla/5.0 (Nintendo 3DS; U; ; en) Version/1.7552.US"
3DS System version 7.1-9.2 = "Mozilla/5.0 (Nintendo 3DS; U; ; en) Version/1.7567.US"
This confirms what im trying to show you. The exploit can work on a full 2.1 firm (which I'm sure it does because theres no other way Gateway people can run their badly coded A9LH installer on 2.1), but it does work with any browser.
The ROP chains the Spider Exploit uses have codes to run on -4 browser(which is basically the 2.1 browser)
Just to let you know, i am not going to keep arguing about this. There was another guy stuck in the same way as the OP and he managed to run Decrypt9 with the -4 browser.
The exploit uses 5 different ROP chains based on the browser's version, detected using the user agent string.
3DS System version 2.0 = "Mozilla/5.0 (Nintendo 3DS; U; ; en) Version/1.7412.US"
3DS System version 2.1-3.X = "Mozilla/5.0 (Nintendo 3DS; U; ; en) Version/1.7455.US"
3DS System version 4.0-4.X = "Mozilla/5.0 (Nintendo 3DS; U; ; en) Version/1.7498.US"
3DS System version 5.0-7.0 = "Mozilla/5.0 (Nintendo 3DS; U; ; en) Version/1.7552.US"
3DS System version 7.1-9.2 = "Mozilla/5.0 (Nintendo 3DS; U; ; en) Version/1.7567.US"
This confirms what im trying to show you. The exploit can work on a full 2.1 firm (which I'm sure it does because theres no other way Gateway people can run their badly coded A9LH installer on 2.1), but it does work with any browser.
The ROP chains the Spider Exploit uses have codes to run on -4 browser(which is basically the 2.1 browser)
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