The following are known CWCheat Codes for Boku no Natsuyasumi 4: Seitouchi Shounen Tanteidan, Boku to Himitsu no Chizu on Sony Playstation Portable (PSP).

_S UCJS-10095
_G Boku no Natsuyasumi 4: Seitouchi Shounen Tanteidan, Boku to Himitsu no Chizu [JP]
_C0 \50 GAME CREDIT 5
_L 0x0140A4CA 0x00000005
_L 0x0140A60C 0x00000005
_L 0x0141B823 0x00000005
_L 0x0141B8B6 0x00000005
_L 0x0141B8BB 0x00000005
_L 0x0142BB6B 0x00000005
_L 0x0142BB6D 0x00000005
_L 0x0142BB6F 0x00000005
_L 0x0142BB75 0x00000005
_C0 00:00 PM
_L 0x002BF91D 0x0000000C
_L 0x002BF91E 0x00000000
_C0 01:00 PM
_L 0x002BF91D 0x0000000D
_L 0x002BF91E 0x00000000
_C0 02:00 PM
_L 0x002BF91D 0x0000000E
_L 0x002BF91E 0x00000000
_C0 03:00 PM
_L 0x002BF91D 0x0000000F
_L 0x002BF91E 0x00000000
_C0 04:00 PM
_L 0x002BF91D 0x00000010
_L 0x002BF91E 0x00000000
_C0 05:00 PM
_L 0x002BF91D 0x00000011
_L 0x002BF91E 0x00000000
_C0 06:00 PM
_L 0x002BF91D 0x00000012
_L 0x002BF91E 0x00000000
_C0 07:00 PM
_L 0x002BF91D 0x00000013
_L 0x002BF91E 0x00000000 
_C0 08:00 AM
_L 0x002BF91D 0x00000008
_L 0x002BF91E 0x00000000
_C0 08:00 PM
_L 0x002BF91D 0x00000014
_L 0x002BF91E 0x00000000
_C0 09:00 AM
_L 0x002BF91D 0x00000009
_L 0x002BF91E 0x00000000
_C0 09:00 PM
_L 0x002BF91D 0x00000015
_L 0x002BF91E 0x00000000
_C0 10:00 AM
_L 0x002BF91D 0x0000000A
_L 0x002BF91E 0x00000000
_C0 10:00 PM
_L 0x002BF91D 0x00000016
_L 0x002BF91E 0x00000000
_C0 11:00 AM
_L 0x002BF91D 0x0000000B
_L 0x002BF91E 0x00000000
_C0 11:00 PM
_L 0x002BF91D 0x00000017
_L 0x002BF91E 0x00000000
_C0 8/1
_L 0x00969B5C 0x00000001
_C0 8/10
_L 0x00969B5C 0x0000000A
_C0 8/11
_L 0x00969B5C 0x0000000B
_C0 8/12
_L 0x00969B5C 0x0000000C
_C0 8/13
_L 0x00969B5C 0x0000000D
_C0 8/14
_L 0x00969B5C 0x0000000E
_C0 8/15
_L 0x00969B5C 0x0000000F
_C0 8/16
_L 0x00969B5C 0x00000010
_C0 8/17
_L 0x00969B5C 0x00000011
_C0 8/18
_L 0x00969B5C 0x00000012
_C0 8/19
_L 0x00969B5C 0x00000013
_C0 8/2
_L 0x00969B5C 0x00000002
_C0 8/20
_L 0x00969B5C 0x00000014
_C0 8/21
_L 0x00969B5C 0x00000015
_C0 8/22
_L 0x00969B5C 0x00000016
_C0 8/23
_L 0x00969B5C 0x00000017
_C0 8/24
_L 0x00969B5C 0x00000018
_C0 8/25
_L 0x00969B5C 0x00000019
_C0 8/26
_L 0x00969B5C 0x0000001A
_C0 8/27
_L 0x00969B5C 0x0000001B
_C0 8/28
_L 0x00969B5C 0x0000001C
_C0 8/29
_L 0x00969B5C 0x0000001D
_C0 8/3
_L 0x00969B5C 0x00000003
_C0 8/30
_L 0x00969B5C 0x0000001E
_C0 8/31
_L 0x00969B5C 0x0000001F
_C0 8/4
_L 0x00969B5C 0x00000004
_C0 8/5
_L 0x00969B5C 0x00000005
_C0 8/6
_L 0x00969B5C 0x00000006
_C0 8/7
_L 0x00969B5C 0x00000007
_C0 8/8
_L 0x00969B5C 0x00000008
_C0 8/9
_L 0x00969B5C 0x00000009
_C0 BOKU METER MAX 
_L 0x20969B74 0x41400000 
_C0 BREATH GAUGE MAX 
_L 0x20760174 0x4140000
_C0 EMPTY BOTTLE
_L 0x20969BBC 0x00000BB8
_C0 FISHING
_L 0x20969BAC 0x0000001E
_C0 GAME HIGH SCORE
_L 0x20969BC4 0x0000C350
_C0 INSECT COLLECTING
_L 0x20969BA8 0x00000096
_C0 Maney 9999
_L 0x20969B78 0x0000270F 
_C0 MONKESHI
_L 0x20969BB0 0x0000001E
_C0 PICTURE DIARY
_L 0x20969BA4 0x000000AA
_C0 SUN TAN
_L 0x20969BC0 0x00000007
_C0 Taiko de Tatsujin
_L 0x2073FD50 0x00000064
_C0 TEST WORD
_L 0x20969BB8 0x0000001A
_C0 VERMING SUMO
_L 0x20969BB4 0x00020001

Do you know any additional codes for this game? Is there an error listed above? Let us know about it and we’ll update the list. Code Indexes for Sony Playstation Portable

• CWCheat Code Index for Sony Playstation Portable