6.x firmware panels must use V7.0 PS Tools for proper functionality. to performing a firmware updates it is MANDATORY that you upload the program PS Tools before performing any updates; especially the MS-9200UDLS 5.x to 6.x, the MS-9600LS 4.x to 6.x. procedure should be as follows: Update the PS Tools to version 7.x Upload the panel. (This way in the event that the program is corrupted by the update will have a copy that is compatible with PST 7.x to download into the updated panel requires 7.x.) Update the firmware as normal using PPU Wizard 3.4.1 the panel reboots and returns a CALC FAULT a RESET of the panel should it. the 9200UDLS62B1.zip