Hacking RedNAND 2.1.0 Downgrade Error

[sora10pls]

I've never come across this error before. I've modded many 3DSes to have A9LH, yet this is the first time I've come across this error.

sysUpdater fails to install the following CIA when downgrading RedNAND to 2.1: "0004001000021000.cia"

The exact error is:
titleException:
title.cpp:126: Result: 0xD8E08027
Failed to finish CIA installation!

SysNAND was downgraded from 11.0 to 9.2 using the DSiWare downgrade method.
Yes, I am on latest firmware in RedNAND.
Yes, I am using the latest version of Luma3DS.

Any help would be awesome

 

[sora10pls]

Wow, I feel silly for not trying sooner haha...

Upon further testing, this particular version of sysUpdater (https://github.com/profi200/sysUpdater/releases/tag/0.4.2) didn't work, despite it never failing me before. Decided to try using the latest release of PlaiSysUpdater, and it installed just fine. Sorry for the useless post, a mod could remove it if need be!