I upgraded iPhone 4 to iOS 5, all pictures were backed up to iCloud, how can I restore them back to my iPhone 4?

There are basically 2 ways to retrieve photos from iCloud backup file. You should choose the one that’s right for you.Solution 1. Recover Photos from iCloud directly on your computerFor people who have lost their iPhone, iPod or iPad, or who have a damaged iOS device, or who are ready to ditch the iOS device for an Android device, then they should try Solution 1, because this way doesn’t require any iOS device, but help you retrieve photos directly from iCloud backup file to computer. What all you need is http://brorsoft.cn/iphone-data-recovery-mac/(http://www.irefone.com/iphone-data-recovery)Part 1. How to Recover Photos from iCloud Backup 1. Choose the recovery mode of "Recover from iCloud Backup", and then you can enter your Apple ID and the password to log in. After that, the program can automatically find all backup files existing in your iCloud account. Choose the one where you're going to recover data and click on the "Download" button. 2. In the pop-up window, you can choose the type of files you would like to download. For recovering photos, you can check Photos to download and scan it now. 3. Finally, preview and select lost photos to restore. After making a choice, please click "Recover to Mac" button to finish the whole process. Solution 2. Restore Photos from iCloud to your iOS device (you must have an iOS device)If you don’t want any software to recover photos from iCloud backup file, then you might like to restore your iOS device from the iCloud backup file which contains your photos. If so, check out the following steps:Note: before restoring photos from iCloud backup file to your iOS device, you should know that everything on your iOS device currently will be erased. Instead, old settings and photos in Camera Roll once backed up to the iCloud file will be restored to your iOS device. If you have some important data, I think you’d better try solution 1, or use Wondershare TunesGo to backup it and then to do the recovery.Step 1Update your iOS to the latest iOS 9 versionOn your iOS device, tap Settings > General > Software Update. If your iOS is not the latest iOS 9 version, the available update is here. Click Install Now and follow the instructions to install it on your iOS device. Step 2Check whether the iCloud backup file is available or notTap Settings > iCloud > Storage & Backup. Look at the bottom of the window to check whether the expected iCloud backup is there or not. Generally speaking, if you’ve done the backup, it’s there. Step 3Retrieve photos from iCloud backup fileTap Settings > General > Reset > Erase all content and settings. In the setup assistant, go to Set up your device > tap Restore from a Backup > go to Choose backup. From the list, choose the expected iCloud backup file to restore your iOS device. After then, you’ll see that all photos you’ve backed up to iCloud are on your iOS device again. See more at: http://ios-data-recovery.jimdo.com/2016/02/27/recover-photos-from-iphone-6s-6-5s-5/

Apple's iTunes and iCloud may give some help to retrieve your lost photos from iPhone although, the point is, for many cases, it's limited to that you have made a full backup of your iPhone before losing the data. And even if you've created an iTunes or iCloud backup in advance, you still need to restore your iPhone with the backup to get back deleted photos, which will cause file overwritten presently on your iPhone.   So, is there any better way to retrieve lost photos from iPhone? Fortunately, some iPhone data recovery software makes the recovering process easier and more effective. Here we'd like to recommend you an iPhone photo recovery tool - http://brorsoft.cn/iphone-data-recovery-mac/ to selectively recover deleted photos from iPhone without restoring and get back your deleted photos on iPhone directly without iTunes or iCloud backup.

Make sure you have the latest iTunes installed on your computer and connect your iPhone with iTunes. In iTunes, go to Preferences >Devices, choose the backup you need from the backup list. then find the "Restore from Backup", click it to restore.