I recommend try to do nindy as below. PLEASE WAIT FOR ANOTHER ONE TO CONFIRM THE BELOW STEPS Max TNT · Remove power for the box. · Connect to the console port at 38,400 bps. · For release 1.2Ap5, set the shelf controller twist dial to 0 (zero), for Release 2.x, remove the shelf controller, open it and short P1. Replace the shelf controller. · Power cycle or reset the TNT. · EF · DF · Load the boot-sr file (TNTSR.BIN or TNTSRE.BIN) · If you removed the shelf controller to short the jumper, remove the power, remove the shelf controller again and remove the jumper from P1 and reassemble.