Cannot complete replacement brake booster air bleed procedure

Ive tried everything to get the air bleed procedure to complete but it is not working.
I replaced the master cylinder and abs accumulator a few months ago and have not been able to do the bleed procedure.
I bought a 50 amp charger, im reading 14 volts when i try to start the procedure and its still not working.
I got the vxdiag cable. I was trying to use it with techstream 18, Ive now signed up for the toyota two day subscription ands its still not working
I also have a code for steering angle sensor. I replaced the clock spring with steering angle sensor twice with used oem ones from ebay and steering angle sesnor is still not reading, it always reads 850.5.
I checked the voltage and resistance checks for the l51 connector that is said to do in the manual, its still not working. Ive attached the DTC's im getting.
Im so desperate to get this to work, ill do anything, somebody please help.