Change a version name.

Hi minecraft fans

can you please help me changing the minecraft name of my version from optifine_HD_U_B2 (its a ghost client) to a optifine_HD_U_H6
I want the change ingame too, so its the same version with the same ghost client with a different name. Please help me

Press start
Type %appdata%
Open .minecraft folder
Open versions folder
Find the folder called optifine_HD_U_B2
Rename th folder to optifine_HD_U_H6
Open that folder, rename both files in it (the jar and json file) to the new name
Open the json file in notepad ++.
CTRL + F optifine_HD_UB2
Replace it with the new name
Save it