•Problems with files being corrupted, files disappearing and the like can be diagnosed
with the “Flash test”.
•Overall responsiveness of the system can be verified with the “LED’s test”.
•Seemingly inexplicable behavior can be caused by defective RAM. The twoRAM tests
“RAM test 1” and “RAM test 2” cover different aspects of RAM test.
5.5.2 Firmware Upload
A complete firmware replacement can be done by uploading a flash disk image file to the
WebNet. As the existing flashdisk contents are deleted and then replaced, all settings must
be restored afterwards.
Upload is done via a minimal implementation of FTP (µ-FTP) that resides in a separate
sector of the WebNet Flash, not on the flashdisk itself. To enable this type of FTP, the
WebNet must be booted with the µ-FTP button on the “Test and service” page. After
approx. 7 seconds, the WebNet is ready to receive a new flash image. Assuming the flash
image is in a file called webnet.bin on a floppy in drive A on the PC, the steps are as
follows:
1. Op en aDOS-prompt and start the FTP-client: ftp 192.168.4.10 .NOTE: Only
text based FTP-clients works with µ-FTP (i.e. not through browser).
2. Set the ftp-client to “binary transfer” with the command bin .
3. Delete the existing flash image with the command del flash
(this command takes a while to return).
4. Transfer the new image with the command put A:\webnet.bin’ (the destination
file is implicitly the flash file). The transfer may take up to a few minutes dependent
on the network quality.
5. µ-FTP may reboot the WebNet from the new flashdisk with the command: quote
BOOT .
6. Once the WebNet has started, close the FTP-client using the command bye . The
Auto-IP feature now detects the IP-address (through the Auto-IP feature). As men-
tioned, all settings should now be restored.
WebNet User’s Guide 27