I have a customer that had a lot of the electrical equipment in the building damaged after a bad storm. It has a duplex setup of Hydraulic Tac 32's. Both controllers had SP/NP bad led on. I have ordered two new 6300XE1 CPUA boards. I am trying to upload the job software to them using the USB thumb drive doing the RST/UDL method but after a few minutes the stat light just blinks red rapidly and the UIT is black block icons. When replacing a CPUA board is there any steps I am missing?

Thanks for any help the customer is not being very patient