i went to the barren wastelands afer i defeated buu and i went through the 175 door to train now i cant go back out i try to go out the door it just wont open help!
Normally , doors can't respawn when they're once open and they can only be opened from the front , but this does lain:
I can't really help you because i neither found any 175er doors in the game nor i encountered such problems lain:
The same happen to me, if you did not save the game in that place where you are, you have to turn off the gameboy and then you turn it on and load the last time you save the game. well thats what i did.