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Download I2P

Dependency

Sun Java 1.5 or higher, or equivalent JRE. (Sun Java 1.6 recommended)
Determine your installed Java version here or type java -version at your command prompt.

Clean installs

The files are signed by zzz, whose key is here.

Post-install work

After running the installer on windows, simply click on the "Start I2P" button which will bring up the router console, which has further instructions.

On Unix-like systems, I2P can be started as a service using the "i2prouter" script, located in the directory you selected for I2P. Changing to that directory in a console and issuing "sh i2prouter status" should tell you the router's status. The arguments "start", "stop" and "restart" control the service. The router console can be accessed at its usual location. For users on OpenSolaris and other systems for which the wrapper (i2psvc) is not supported, start the router with "sh runplain.sh" instead.

When installing for the first time, please remember to adjust your NAT/firewall if you can, bearing in mind the Internet-facing ports I2P uses, described here among other ports. If you have successfully opened your port to inbound TCP, also enable inbound TCP on the configuration page.

Also, please review and adjust the bandwidth settings on the configuration page, as the default settings of 96 KBps down / 40 KBps up are fairly slow.

Updates from earlier releases:

Both automatic and manual upgrades are available for the release.

If you are running 0.7.5 or later, your router should detect the new release. To upgrade simply click the 'Download Update' button on your router console when it appears.

Due to a bug in release 0.7.6, those whose first I2P installation was that version and have not upgraded manually may get a "downloaded version is not greater than current version" error, and should use the manual update method below.

If you are running 0.7.4 or earlier, please see the 0.7.5 release notes for important information about how to configure your router to automatically receive the release.

If you are running 0.6.1.30 or earlier, please see instructions for important information about how to configure your router to automatically receive the release.

  1. If you have reconfigured your router following the instructions, you should see a link on your router console allowing you to download and install the new release by just clicking on that link.
  2. Alternately, you can use the manual method specified below.

Updates from earlier releases (manual method):

  1. Download i2pupdate_0.7.9.zip (SHA256 cd2e113ee205c7d33b18920ca1e853d18fecd0f79e30c74a9c20c79cbb553889 sig) to your I2P installation directory and rename as i2pupdate.zip. (alternately, you can get the source as above and run "ant updater", then copy the resulting i2pupdate.zip to your I2P installation directory). You do NOT need to unzip that file.
  2. Click "Graceful restart"
  3. Grab a cup of coffee and come back in 11 minutes
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