can't upgrade magento to 1.7 from 1.5.1

Question

Please help! I have an installation of magento v 1.5.1 and I want to upgrade it to 1.7 but when i try to list upgrades, this is what i only see:

wp_theme_grayscale: 1.0.7 => 1.4.0
RicoNeitzel_VertNav: 0.3.1 => 0.4.0
Locale_Mage_community_fr_FR: 1.7.0.0 => 1.7.0.1
TBT_Enhancedgrid: 1.3.2.1 => 1.031

any suggestions?

after upgrading all, and tried to list all upgrades again, it couldn't see any upgrade anymore.

your help would be much appreciated.

EDIT:

I used this guide. http://turnkeye.com/blog/magento-upgrade-guide/ I did not get any error. the updates above are just the updates that i can see,

Answer 1

OK, I can share my successful experience of upgrading:

1. Go to System -> Magento Connect -> Magento Connect Manager

2. Log in using your username and password

3. Click on “Check for Upgrades” button

4.You will notice that most package rows turn to yellow. These packages are the only that have available updates. Go to each package row, click on “Actions” drop-down menu and select the most current stable version available.

Note: Stable version available may vary for each package. For example, some packages may have 1.7.0.2 upgrade version and others 1.7.0.1 or lower. Don’t bother with this, just pick the latest stable version available.

1. When you are done selecting upgrade version for all packages, click on “Commit Changes” button.

2. Now, you have to wait. Give it some time. During upgrading process, you may see various notes or outputs that may be tricky and you may think that the process is done. Well, IT IS NOT. Just wait, give it some more minutes. The process will be done when there is no activity in the “command line” like console for about one minute.

3. Click on “Refresh” button. You are almost done! Technically, you have completed the upgrade process.

4. Go to your cPanel file manager or your FTP client and delete EVERYTHING in var/ directory.

5. Last but not least, reindex data in Admin -> Index Management

When you enter admin section and scroll down, you will notice that it says “Magento ver. 1.7.0.2”

This process worked for me fine.