Nokia 2255 Baseband Description And Troubleshooting page 9

2255 (RM-97)
Nokia Customer Care Baseband Description and Troubleshooting
prommer and MCU
FBUSRX = Data to UPP
FBUSTX = Data to prommer
VPP = 0v/ 1.8v/ 12v (read only/normal op. or slow programming/fast programming)
Figure 4 shows the DA-55 docking station adapter and Module Jig MJ-72.
Figure 4: DA-55 docking station adapter and MJ-72 module jig
Figure 5: Flash programming mode
©2005 Nokia Corporation
ISSUE 1 10/2005 Company Confidential Page 9