G4 boots into open firmware.

A G4 450DP running OS9.1 after a clean system install boots directly into open firmware with the message

"open, unknown word
DEFAULT CATCH! code=300 at %SSR0 : ff80b070
%SRR1 : 00003030"

then lists the bootROM build details followed by

"Welcome to Open Firmware.
To continue booting type "mac-boot and return"

but no response from keyboard.
Any suggestions
flexiAsked:
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weedConnect With a Mentor Commented:
Hmmm a failed firmware update. I think youre probably right about the cause of the error. Type "reset-all" at the open firmware prompt then restart. See if that changes anything.
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weedCommented:
Have you tried resetting the PRAM? Done a CUDA reset? Once booted you may want to check your software update control panel for firmware updates etc.
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flexiAuthor Commented:
PRAM has been zapped, cuda reset and a failed attempt to update to G4 Firmware 4.1.8.

I figure that the attempted update has damaged the
firmware boot info as indicated by

"open, unknown word
DEFAULT CATCH! code=300 at %SSR0 : ff80b070
%SRR1 : 00003030"

Can I restore the settings to default ?
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flexiAuthor Commented:
I managed to fix the problem by re-installing the firmware upgrade. The trick was to release the programmers button during the firmware install as soon as the long tone is heard and not waiting till the end of the tone.

 The bootup from the G4 was acheived by unplugging and the re-plugging the battery before booting.
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