Back

Bitcoin Core version 0.9.2.1 is now available from:

https://bitcoin.org/bin/0.9.2.1/

This is a new minor version release, bringing mostly bug fixes and some minor improvements. OpenSSL has been updated because of a security issue (CVE-2014-0224). Upgrading to this release is recommended.

Please report bugs using the issue tracker at github:

https://github.com/bitcoin/bitcoin/issues

How to Upgrade

If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).

If you are upgrading from version 0.7.2 or earlier, the first time you run 0.9.2.1 your blockchain files will be re-indexed, which will take anywhere from 30 minutes to several hours, depending on the speed of your machine.

Downgrading warnings

The ‘chainstate’ for this release is not always compatible with previous releases, so if you run 0.9.x and then decide to switch back to a 0.8.x release you might get a blockchain validation error when starting the old release (due to ‘pruned outputs’ being omitted from the index of unspent transaction outputs).

Running the old release with the -reindex option will rebuild the chainstate data structures and correct the problem.

Also, the first time you run a 0.8.x release on a 0.9 wallet it will rescan the blockchain for missing spent coins, which will take a long time (tens of minutes on a typical machine).

Important changes

Gitian OSX build

The deterministic build system that was already used for Windows and Linux builds is now used for OSX as well. Although the resulting executables have been tested quite a bit, there could be possible regressions. Be sure to report these on the Github bug tracker mentioned above.

Compatibility of Linux build

For Linux we now build against Qt 4.6, and filter the symbols for libstdc++ and glibc. This brings back compatibility with

0.9.2 - 0.9.2.1 Release notes

The OpenSSL dependency in the gitian builds has been upgraded to 1.0.1h because of CVE-2014-0224.

RPC:

Command-line options:

Block-chain handling and storage:

Protocol and network code:

Wallet:

Build system:

GUI:

Miscellaneous:

Credits

Thanks to everyone who contributed to this release: