I am not sure about the Magician, but it would think its not different from the Himalaya: If you just install one of the T-Mobile based Extended ROM's you will have your spash screens back. Its in one of the T-Mobile customisations cabs.
I think the tools available for Himalaya wont work since they rely on the Himalaya rom structure, which is different from the magician structure
HTC Vision (Desire Z) with 13th Gen Dual SIM on TMO and Voda
Previously owned MDA Vario IV, MDA Vario and MDA II