I tried this, but it doesn't work:The offline installer is only intended to just install themehax if you haven't got it already as the online version errors trying to install it. That being said you *could* put your ropbin payload into the "otherapp" folder inside the installer folder. That may allow you to install the 2.5 version, otherwise just follow the instructions here.
Ahhhh. After re-doing everything, I got it to work.@code640
I got that same error as well, however when I put the ropbin payload onto the root of the sd and followed the steps from this post (https://gbatemp.net/threads/tutoria...-themehax-manually.400784/page-7#post-5760177), I was able to launch hax2.5
You do not need to install v2.5 (offline version for V2.5 is currently not available & online/wifi needed version doesn't work at the moment).I had a compiled custom themehax and now I'm not able to use it.
I cannot reinstall it with 2.5 (at least via browserhax)
Use the offline installer.I can't seem to get themhax to install at all, I either get an HTTP payload size error (when using 1.2), or if I use the git build I did, it refuses to install it with "Failed to parse the payload: 0xfffffffb". I didn't have themehax installed before at all, and am currently using ninjhax. I reinstalled ninjhax and redid everything, so it's now using the 2.5 payload at least (sleep works now). Is it possible to install themehax? I'm on a N3DS 9.8.0-25U
Here is the offline installer.

So, I was just able to install themehax 2.1 using browserhax and themehax offline installer. The problem I have is that I am on N3ds 10.1.0 U but in the root of my sdcard it only shows menuhax_ropbinpayload.bin and not something like "ropbinpayload_menuhax_********_new3ds.bin" . Should I download the ropbin and name it to menuhax_ropbinpayload.bin even though I am on New 3ds?
Yes. Rename the 2.5 ropbin after the name of your old generated-by-themehax ropbin.So, I was just able to install themehax 2.1 using browserhax and themehax offline installer. The problem I have is that I am on N3ds 10.1.0 U but in the root of my sdcard it only shows menuhax_ropbinpayload.bin and not something like "ropbinpayload_menuhax_********_new3ds.bin" . Should I download the ropbin and name it to menuhax_ropbinpayload.bin even though I am on New 3ds?
I got the browser hack to word today.So, we're still gathering info about this, but it seems as though Nintendo has killed browserhax on FW 9.9+
This is really big/bad news for those who still haven't managed to install themehax or do not have the entry point of Ironhax/OotHax/Ninjahax
I guess smash hax will be the next big thing for installing themehaxSo, we're still gathering info about this, but it seems as though Nintendo has killed browserhax on FW 9.9+
This is really big/bad news for those who still haven't managed to install themehax or do not have the entry point of Ironhax/OotHax/Ninjahax

I guess smash hax will be the next big thing for installing themehax
I used old 3DS 9.9.0-26E.
I got the browser hack to word today. So I don't think it's patched for users under 10.2.
But wasn't Themehax already dead on 10.2? So staying between 9.9 and 10.1, you have a dead browser too since at the moment you can't launch without update snag.I guess smash hax will be the next big thing for installing themehax