Program Type

Value	Name	Device	Files	Remarks
0	PUP	PS4	PS4UPDATEx.PUP (decrypted) where x is a non-null unsigned integer	Comes from packed and encrypted PUP.
1	LV0 / level 0	PS3		load by lv0ldr, auth by lv0ldr
2	LV1 / level 1	PS3		load by lv0, auth by lv1ldr
3	LV2 / level 2	PS3		load by lv1, auth by lv2ldr
4	APP / Application	PS3		load by lv1, auth by appldr
5	ISO / Isolated SPU Module	PS3		load by lv1, auth by isoldr
6	LDR / Secure Loader	PS3		load by lv0(for lv1ldr)/lv1(for appldr, isoldr, lv2ldr), auth by metldr
7	KERNEL / Kernel PRX	PS3, PS Vita	PS Vita kernel modules (.skprx)	On PS3, load by lv1, auth by appldr. Does not use keyid.
8	NPDRM / NPDRM Application	PS3, PS Vita, PS4	NPDRM SELF and PS Vita SDK fSELF (eboot.bin, .suprx, .self)	load by lv1, auth by appldr. Uses keyid.
9	BOOT (PS Vita), Plugin (PS4)	PS Vita, PS4	PS Vita: kernel_boot_loader.self, PS4: .sprx, .sdll, .sexe	PS Vita: does not use keyid.
10	unknown	unknown
11	SM / Secure Module	PS Vita	os0:sm/*.self and slb2:kprx_auth_sm.self
12	KERNEL ?or BIOS?	PS4	Full kernel and/or BIOS
13	USER / System Usermode Module	PS Vita	system usermode modules (.self, eboot.bin, .suprx)	Uses keyid.
14	unknown (PS Vita), SM / Secure Module (PS4)	PS Vita, PS4		Seen in applier_sm.self and kprx_auth_sm.self -> Maybe DIFF files. Does not use keyid.
15	SK / Secure Kernel	PS4