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| Upgrading Pismo boot rom to 4.1.8f5 or newer? |
Posted by: FacnyFreddy on 2017-04-03 16:32:29
I don't see alot of articles on this.
My main pismo has a v3 boot rom
My secondary/test has a v4.1.8f5 boot room and it sees the G4 board just fine.
Any help is appreciated.
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Posted by: FacnyFreddy on 2017-04-03 21:13:14
Found the firmware updater out on macupdate.... had to do some hunting. (Apple tech article ended up in the waste bin of the internet and is lost for good)
https://www.macupdate.com/app/mac/5658/apple-powerbook-firmware#
Still getting an odd bit of feedback in system profiler.
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Posted by: belgaonkar on 2017-04-05 05:17:02
I know for a fact that the only way to update the firmware on a clamshell is to drop it back down to 9.1 then update it. Seeing that these machines are from a similar era, it maybe similar.
Maybe LightBulbFun can help you out with this, you should probably PM him!
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Posted by: belgaonkar on 2017-04-05 05:20:23
check this out: http://comp.sys.mac.portables.narkive.com/zu2ehdUW/os-9-22-pismo-4-1-8-firmware-update
Looks like you will need 9.1 to update the firmware to 4.1.8
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Posted by: FacnyFreddy on 2017-04-05 17:22:17
Yup, thats what I had to do.
Install my hacked PRAM battery (which does not currently fit into the brown "blanket" of the bottom case) and let it charge for an hour.
Boot into a fresh 9.1 image and then run the firmware upgrade utility (twice!)
Then I reset the pram, crossed my fingers, and then tested it out.
I pulled the pram battery and installed my G4 board and then loaded a DVD into the drive bay with OS 10.4.11 and everything works PERFECTLY!!!
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Posted by: belgaonkar on 2017-04-05 19:14:34
If you have the G4 board, might as well install 10.5!
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