You need to download the 2.5 payload ropbin and replace the ropbin on your SD. Look at the update payload 2.5 part.I just tried it & it work, it need doesn't need internet i believe.
Autoboot is working fine with 2.5 but i can't run 2.5 app like HANS & Eshop (black screen).
I think I will have to wait for a Homemenuhax for 2.5 HAX
https://gbatemp.net/threads/doubt-themehax-o3ds-sysnand-9-4.400788/#post-5757610
Last edited by tivu100,