10.7.3 update - checksum error

Question

Level 1

0 points

10.7.3 update - checksum error

Hi all,

I had a problem when trying to update Lion to 10.7.3: through the automatic update the installation failed, hence I manually downloaded the file from the Apple support page. The file length is correct but when I tried to mount it, an invalid checksum error appeared. I downloaded the file several times and the SHA1 code was always different (???).

On the same wifi network I have a windows notebook, so I downloaded the file with this pc and transferred it via usb to the Macbook, result: the file is ok and the SHA1 code is correct and I regularly updated the system.

I know that this "workaround" worked but considering that my Macbook is new, I cannot accept that an automatic update doesn't work so I tried to download again the file but it continues to fail the checksum test…. anybody else has the same problem? Any idea of what is going wrong with my Macbook (or maybe is the internet connection)?

I already had the same problem when trying to update the iOS on iPhone or iPad and I had to update via the windows pc. My Macbook doesn't like Apple servers?

I really hope someone could help me! Thanks 🙂

MacBook Pro, Mac OS X (10.7.3)

Posted on Feb 6, 2012 8:55 AM

Reply

Answer 1

Ronnie80 Author

Level 1

0 points

Feb 6, 2012 8:59 AM in response to Ronnie80

ps: I already tried to run Disc utility to use Repair permissions, repair disk, etc... no luck

Reply

Answer 2

Feb 6, 2012 9:13 AM in response to Ronnie80

It looks as if the problem is coming from the wifi connection. Have you tried to connect your MBP by ethernet instead of Wifi ? If no, try this to see if there is any difference.

The fact you got a correct update through your pc shows that internet is ok and wifi is ok between pc and router. So, you may have troubles in wifi between your router and Apple stuff...

Reply

Answer 3

Ronnie80 Author

Level 1

0 points

Feb 6, 2012 12:06 PM in response to Jean-Marie Allier

Yes, I tried to connect the MPB with an ethernet cable but the problem is still there.

I also think that the problem is between MPB and router but I have no idea of which settings trying to change... I only have problems with files downloaded from Apple site, every other files (even .dmg or whatever) is correctly downloaded and works properly.

Reply