Download and install this forwarder channel using any YAWMM or MMM's Wad Manager
Dark Homebrew Channel by NeoRame- HAXX.wad
this will redirect all older programs that still call either HAXX or JODI titles of the older HBCs to the new v1.07+ Homebrew Channel, including priiloader v0.4
If you're on SM v4.2 or 4.3 be sure to enable the hacks to block the deletion of the HAXX channel, otherwise once u load the system menu the above channel will get deleted (but u can always enable the hack and reinstall it so w/e)
btw, priiloader v0.4 can still launch any version of the HBC without the above file using its title launcher... it just can't autoboot the HBC
FYI, u CAN restore your nand backup, its just a complicated button combination for people who have bootmii as IOS (read instructions onscreen). The reason for this, is because ppl with bootmii as IOS shouldn't be performing nand restorations unless absolutely necessary. It's pretty stable, but not nearly as stable as bootmii @ boot2. I'm pretty sure the reason for this is because bootmii @ boot2 restores the entire nand except the boot2, but bootmii @ IOS restores the entire nand except boot2 and bootmii @ IOS, which is more complicated because its not the very first blocks like boot2 is. Anyways, the point is, you shouldn't run to restore a nand backup at first sight of a little problem, especially one as small as autobooting to the HBC
edit:
WooHoo! The ModMii thread broke 100 pages!