How to downgrade back to 10.10.2 from 10.10.3

No.

why do you NEED to? give it a chance.... 🙂

I want to downgrade my system as well. Installing 10.10.3 has corrupted my apple SSD drive to the point that the system is unusable. I have reinstalled 10.10.3 multiple times including from back-ups, but none of this has solved the problems with the drive.

If OS downgrade is your only priority and you don't need to worry about a timemachine bk then you can. If you have a 10.10.0 installer dmg you can reinstall from that and then download the 10.10.2 combo update from the apple support website and downgrade successfully. I did this yesterday as 10.10.3 Avid MC has bugs with the new mac OS which required it. Working fine in 10.10.2 again in about an hour. You may need to uninstally and reinstall any third party software however as those extension will not work after the downgrade.

Unless you have a back up prior to upgrading to 10.10.3 or have the 10.10.2 full installer from the App Store saved somewhere, you won't be able to downgrade to that version.

Unless you keep them when you upgrade [as I do] you likely cannot get your hands on a full installer anymore. You can still download updates however like the 10.10.2 combo updater from apple. good practice to always keep a full installer dmg on an external.

Meerahone wrote:

I like the old photo app, and the system is way to slow.

You can still use iPhoto. Just point it to the renamed legacy photo library.

As for slowness: that's not the update. Check your system to make sure that everything is up-to-date, and try quitting any third-party applications that run in the background, or AV software.

Oh, and btw: BACK UP YOIUR FILES. If you don't, then you should expect to lose your files as some point in the future.

I need to rollback too. Up until now, I've been consistent with my wifi at around 12 mbps. Since the update, I've been hovering between .20 and 2.2mbps, if I can connect at all. I've got apps to upload and I dont have time for this.

Smagyarown wrote:

I need to rollback too. Up until now, I've been consistent with my wifi at around 12 mbps. Since the update, I've been hovering between .20 and 2.2mbps, if I can connect at all. I've got apps to upload and I dont have time for this.

Then restore your backup.

From the sounds of it, you may not actually have a problem with Wifi, but something gobbling up all your bandwidth. Before you try rolling back go into the new Photos app and see if the preference is set to use iCloud Photo Library. If so, I've seen several cases already where the process of the Photos app trying to upload the photos from your Mac to iCloud uses all your bandwidth. Turn off this option to test and see if your network comes back up to speed.

I have this issue as well. 10.10.3 has slowed my system to the point Parallels is un-usable. I know others will opine that its Parallels but my experience tells me otherwise. Parallels was working well until I rebooted after the 10.10.3 update.

I would be happy to entertain another explanation but logic would suggest the 10.10.3 update is the culprit.

I also have a huge issue with 10.10.3 .... after this upgrade from 10.10.2, I can no longer use an external monitor with my Mac Book Pro (retina) - everything was fine with 10.10.2... now it refuses to recognise my monitor and I have tried different ports, rebooting all the usual stuff, no joy! I had the same issue some time ago with the last update to 10.9...... so I upgraded to Yosemite. This is very frustrating and I wish I had time machine backup! Hope this issue is fixed soon.

After a significant amount of time trying to isolate the cause of the issues I was experiencing, I found that the problem was with ADNX xScanSolo. I had a beta of the software on my computer which interrupted the normal functioning of the system. Once I removed this from my computer and reinstalled the system, everything went back to normal. 10.10.3 now works great!

I am going to go back to 10.10.2 too.

this Photos app is a disaster fro my partner, she is 62 and resistant to change like this ..I hate it to. Just want to cry this morning , Faces Albums etc all 'effectively ' gone in the new Photos.

I had the machine running all last night doing the updates after installing 10.10.2 yesterday I have just woken up to this ..well devastation...

So how do I go back to 10.10.2

I have both Time Machine backups and the 10.10.2 installer

What is the best way?