Booting VSH in Jpcsp

[gid15]

Code:

20:37:34 DEBUG hle.ModuleMgrForKernel - user_main_19 - sceKernelLoadModuleToBlock path=0x0800A61C('flash0:/kd/libatrac3plus.prx'), blockId=0x34, unknown1=0x09FFF5E0, unknown2=0x0, optionAddr=0x00000000
...
20:37:35  INFO   loader - idle1_8 - Found ModuleInfo at 0x09C8295C, name:'sceATRAC3plus_Library', version: 0105, attr: 0x00000006, gp: 0x09C8AC80

The issue is that you have a PSP original file under flash0/kd/libatrac3plus.prx and Jpcsp is now trying to load it instead of using the HLE implementation...
Just try to delete flash0/kd/libatrac3plus.prx.