5.5.2 Update is out, patches browser exploit entry, other than that, everything seems working fine [kernel stays the same, which is why the old dsexploit[haxchi] still works as well as CBHC, since the auto update does partial update, it won't overwrite the system title that used for CBHC, so my CBHC still booted just fine as well as the homebrews.
CBHC's spoofing worked just fine [99.99.99] until I launched the eshop. As soon as I entered the eshop, it checked the FW then started auto downloading 5.5.2 update, I could've probably tried deleting the downloaded FW but I was lazy to do the research, and it turns out, started auto-updating on the next boot.
Anyways, if you guys changed DNS to prevent the access to the Nintendo server, it would completely block the FW update which I didn't
It kinda sucks that I lost one entry that works for all, but at least I still have my VC entry [DSGame/Haxchi] so I guess I can live with it.
btw, those who are using redNAND can freely update the FW except it "MAY" or "MAY NOT" brick the redNAND [which I haven't tried since I got stuck with sysNAND setup only], even if you get brick on redNAND you can just start from the scratch as long as your sysNAND is alive.