Mity CPU Platforms » MityDSP-L138 (ARM9 Based Platforms)

We are using the L138-FX-225-RC on a new custom baseboard and are having trouble with boot:
- no UART activity in normal SPI boot
- UART boot mode sends "BOOTME"
We attempted to erase and flash the bootloader using the WinCE boot package contents and instructions:
- running "sfh_OMAP-L138.exe erase -p COM1" shows expected activity until erasing progress bar appears, then hangs at 0% complete.
running "sfh_OMAP-L138.exe -flash -p COM1 -appStartAddr 0xc7f60000 -appLoadAddr 0xc7f60000 arm-spi-ais.bin EBOOTSPIFLASH.nb0" shows expected activity, transfers image, but hangs at writing flash progress bar.

There are no other peripherals connected to SPI1 data, clock, or SCS⁰ signals, or to I2C0. We are using the LCD interface, but the LCD is not connected during these tests. Probing SPI1_SCS⁰ shows change from 3.3V to ~1.7V at the time when the flash is being accessed - should this not be ~0V? Are there any other interface signals that could cause this problem?

Thanks,
Anton