The following are known CWCheat Codes for Final Fantasy IV: The Complete Collection on Sony Playstation Portable (PSP).

_S NPJH-50414
_G Final Fantasy IV: The Complete Collection (PlayStation Store) [JP]
_C0 9999999 Gil
_L 0x203FB500 0x05F5E0FF
_C0 DOMINANT left-handed ARM
_L 0x003F8453 0x00000002
_C0 DOMINANT right-handed ARM
_L 0x003F8453 0x00000001
_C0 DOMINANT two-handed ARM
_L 0x003F8453 0x00000003
_C0 DROP 100
_L 0x2005A66C 0x00000000
_L 0x2005A6F0 0x00000000 
_C0 DROP SITEI item 1
_L 0x2005A734 0x00000000
_L 0x2005A748 0x00000000
_L 0x1005A754 0x00000022
_C0 DROP SITEI item 2
_L 0x2005A734 0x00000000
_L 0x2005A748 0x00000000
_L 0x1005A754 0x00000024
_C0 DROP SITEI item 3
_L 0x2005A734 0x00000000
_L 0x2005A748 0x00000000
_L 0x1005A754 0x00000026
_C0 DROP SITEI item 4
_L 0x2005A734 0x00000000
_L 0x2005A748 0x00000000
_L 0x1005A754 0x00000028
_C0 EXP 8 TIMES
_L 0x2005a53c 0x000528C0
_C0 EXP 999999 (ashera)
_L 0x203F87E4 0x000F423F
_C0 EXP 999999 (Ceodore)
_L 0x203F8674 0x000F423F
_C0 EXP 999999 (nazo)
_L 0x203F76A4 0x000F423F
_C0 EXP 999999 (yan)
_L 0x203F7DD4 0x000F423F
_C0 GIL 99999999
_L 0x203FC500 0x05F5E0FF
_C0 Interlude 9999999 Gil
_L 0x203FB500 0x05F5E0FF
_C0 INTERLUDE NO ENCOUNT
_L 0x200CF8E0 0x1000004C
_L 0xD0000001 0x10008000
_L 0x200CF8E0 0x14C70053
_C0 ITEM
_L 0x003FBEB2 0x00000063
_C0 ITEM 99
_L 0x80794256 0x01210002
_L 0x00000063 0x00000000
_C0 Orginal 9999999 Gil
_L 0x203FB500 0x05F5E0FF
_C0 ORGINAL ATB GAUGE MAX
_L 0xE0020000 0x10796020
_L 0x60796020 0x00002000
_L 0x00020001 0x000002E4
_L 0xE0020000 0x10796024
_L 0x60796024 0x00002000
_L 0x00020001 0x000002E4
_L 0xE0020000 0x10796028
_L 0x60796028 0x00002000
_L 0x00020001 0x000002E4
_L 0xE0020000 0x1079602C
_L 0x6079602C 0x00002000
_L 0x00020001 0x000002E4
_L 0xE0020000 0x10796030
_L 0x60796030 0x00002000
_L 0x00020001 0x000002E4
_C0 ORGINAL BOOK ALL
_L 0x2000E9B4 0x00000000
_L 0x2000E9DC 0x53E00005
_L 0x1000E9E8 0x000007E7
_L 0x2000EB4C 0x00000000
_L 0x2000EB74 0x53E00005
_L 0x1000EB80 0x000007E7
_C0 ORGINAL DEBU CHOCOBO ITEM ALL
_L 0x403FAF70 0x00ED0001
_L 0x00630001 0x00000001
_L 0x403FB324 0x000A0001
_L 0x006300FC 0x00000001
_L 0x403FB34C 0x00240001
_L 0x00630116 0x00000001
_C0 ORGINAL ITEM DROP 100 PER
_L 0x2005A66C 0x00000000
_L 0x2005A6F0 0x00000000
_C0 ORGINAL ITEM GET NO LIMIT
_L 0x201B6B78 0x02201024
_C0 ORGINAL MAGIC GAUGE MAX
_L 0xE0020000 0x107960F0
_L 0x607960F0 0x00002000
_L 0x00020001 0x000002EC
_L 0xE0020000 0x107960F4
_L 0x607960F4 0x00002000
_L 0x00020001 0x000002EC
_L 0xE0020000 0x107960F8
_L 0x607960F8 0x00002000
_L 0x00020001 0x000002EC
_L 0xE0020000 0x107960FC
_L 0x607960FC 0x00002000
_L 0x00020001 0x000002EC
_L 0xE0020000 0x10796100
_L 0x60796100 0x00002000
_L 0x00020001 0x000002EC
_C0 ORGINAL MP NO LIMIT
_L 0x2005D1B8 0x50000019
_L 0x2005D340 0x00000000
_L 0x2007BF34 0x00000000
_L 0x20162F5C 0x00000000
_L 0x20165494 0x00000000
_L 0x201B4454 0x10000002
_C0 ORGINAL NO ENCOUNT
_L 0x200CF8E0 0x1000004C
_L 0xD0000001 0x10008000
_L 0x200CF8E0 0x14C70053
_C0 ORGINAL REBIRTH IN TENT
_L 0x201C5BD8 0x30A54000
_C0 the After Years 9999999 Gil
_L 0x203FB500 0x05F5E0FF
_C0 THE AFTER YEARS NO ENCOUNT
_L 0x200A0D04 0x10000005
_L 0x200B968C 0x10000005
_L 0x200CF8E0 0x1000004C
_L 0xD0000003 0x10008000
_L 0x200A0D04 0x10800005
_L 0x200B968C 0x10800005
_L 0x200CF8E0 0x14C70053