• Posted: 2020-08-24
  • Author: zzz
  • Posted in release

0.9.47 enables our new end-to-end encryption protocol (proposal 144) by default for some services. The Sybil analysis and blocking tool is now enabled by default.

Java 8 or higher is now required. Debian packages for Wheezy and Stretch, and for Ubuntu Trusty and Precise, are no longer supported. Users on those platforms should upgrade so you may continue to receive I2P updates.

As usual, we recommend that you update to this release. The best way to maintain security and help the network is to run the latest release.



  • Java 8 now required
  • Jetty 9.3.28
  • Tomcat 9.0.35
  • Json-simple 2.3.0
  • RRD4J 3.6
  • ECIES-X25519-AEAD-Ratchet encryption enabled for i2psnark, shared clients, HTTP proxy, and new tunnels
  • Increase streaming MTU for ECIES connections
  • Enable Sybil analysis and blocking tool by default

Bug Fixes

  • Hidden Services Manager: Fix missing server tunnel length configuration
  • Hidden Services Manager: Fix missing server throttle configuration
  • i2psnark: Fix javascript confirmation for delete buttons
  • UPnP: More fixes for changing interfaces and devices
  • Fix DoH handling of Cloudflare responses
  • Fix blinded/encrypted leaseset creation
  • Fix persistent leaseset keys


  • Sign Windows dlls
  • Faster gzip uncompression for level 0
  • i2psnark: Increase max pipeline
  • Translation updates

Full list of fixed bugs

SHA256 Checksums:

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29fcf906bdb4e94dba55ef5bda491b074ef279502290e3df7783925dec159983  i2pupdate.su3