Test Mode - World Heroes 2 Jet (U) (SGB)

System: (Super) Game Boy
Game Title: World Heroes 2 Jet (U)

Game Genie Codes:

Infinite Health Player 1

C9A-10F-E62

Boot Into Test Mode
0B0-D9E-E6A

Test Mode:
On the Takara screen, quickly press:
Up, B, A, Down, B, A, Left, Right


Also, here is another unknown cheat.
I don't know how to access it.

40 u
80 d
20 l
10 r
04 se
01 a
04 se
02 b
01 a

up 40
down 80
left 20
right 10
a 01
b 02
select 04
start 08