I can no longer update my Mac G5 from the handheld. I suspect the update cable because it has three pins on the right shorter than the other two.

Good discussion on the Apple support site with lots of links for items relating to Safari and (where to find) OS X 10.5.6:
Imac G5 Safari update 2014

Utilise alter monitor settings. Compatibility settings.

It is available on usenet.

You can not update flash on 10.5. 10.7 or 10.8 are required. PowerPC and 10.6 And below are no longer supported.

Hello
A download problem can come from multiple things:
- It can be the navigator (Safari or firefox for example) that needs to be updated- It can be a permission problem on the system: please check and repair the permissions using disk utility:
Open /Applications/Utilities/Disk UtilitySelect "SOS" TabClick: "Repair permissions" button Wait until this is finishedReboot the computer
- It can also come from a full hard drive that no longer accepts downloads! To check which file takes all the place, I suggest Disk Inventory X
Hope this helpsDamien

The long tone and flashing light has to do with your firmware. If your mac boots up, you could try to download the latest firmware update and install it. But more than likely you will need to take this one into the shop.

This would need a update wow i cannot beleave i forgot this as I just repaired a mac with the same issue its a java update that it needs this will clear up the issues in safari also empty your cache and rerun safari and you should be set with out and further issues.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

SuperDrive Firmware Update Download - Softpedia

two things to consider. There are two different types of Ethernet cables out there. Perhaps you have a one way cable for the second one. To test this, unhook the working cable from the mac that gets internet and then hook that one up to the one that doesn't get it. See if it sees the network after a minute. The other issue might be in the Operating System. You might need to make sure that they are both up to date with all of the latest updates installed. (I know, hard to do with out an internet hook up.)
Lastly, make sure you are plugging in the cable to the right place on the back of the router. Seems silly, but some of the best have accidentally put it into a link plug to connect several routers rather than an actual Ethernet plug.

I originally had the same problem but with a G5. Since Nikon never updated the software for the LS2000 to work with Apple I ended up buying a FR1SX adapter from RATOC Systems: http://www.ratocsystems.com/english/products/FR1SX.htmlwhich connects the SCSI pins to a Firewire cable. Then I purchased the VueScan software from http://www.hamrick.com/vsm.html. The scanner worked for several years with this combination.