User Guide

Nokia Customer Care Baseband Description and Troubleshooting
6255/6255i6256/6256i (RM-19)
Issue 2 05/2005 ©2005 Nokia Corporation Company Confidential Page 21
Figure 10: Flashing starts by BSI being pulled up and password being sent to UEME
This boot code asks the MCU to report the mobile terminal’s configuration information
to the prommer, including the flash device type. The prommer can then select and send
the algorithm code to the MCU SRAM and SRAM/Flash self-tests can be executed.
CH1 = BSI
CH2 = MBUS
CH3 = FBUSTX
CH4 = FBUSRX
Measure points
Production test pattern
(J396)
FLASH_1