I have a 4mB zip that contains WS4 platform (EEPROM) and CAL upgrades and documentation all in one zip. Free to you. (ex Micros employee) But if you want to take your workstation back to factory settings please do the following:
Factory Restore
The procedure to initiate the Factory Restore feature can be found below.
WARNING:
Factory Restore deletes all files from the Compact Flash Card. If required, take steps to preserve files on the CF card before running Factory Restore.
1. Connect a Keyboard to the workstation, and power-up.
2. When the Blue BIOS splash screen appears, press the key combination [ALT-M]. Note: some keyboards do not initalize in time to detect this key combination. As an alternative, you can press [Del] to enter BIOS Setup, select the Features Configuration screen, and set the WIN_CE_FACTORY_RESTORE field to ‘Enabled.’ Press [ESC] to continue.
• The screen prompts for the system password.
3. If you have not changed the default system password, enter ‘Hmlton’ (case sensitive) and press enter. Press ‘Y’ to confirm.
• The screen returns to the Setup Main Menu.
4. Select ‘Write to CMOS and Exit’ and press enter. Press ‘Y’ to confirm.
• The unit restarts and prompts ‘Factory Restore in Progress - Please Wait.’
5. When the process is complete, the unit restarts.
The workstation is now running the operating system and platform files that were originally stored in the hidden factory restore partition. Over time, some files may become out-of-date. However since the purpose of Factory Restore is to repair a workstation that will not boot, the unit
can now be pointed to a properly configured application server running the CAL where it will receive available platform updates and the application software.
Cheers. Steve