Actually, I also have a 0.7.6 firmware version, which was released 03/24/14 but the latest is 0.7.56 which was released on 09/04/14 and is the last.
I have the following versions:
0.6.32
0.6.48
0.7.56
0.7.6
I also have all of the PDF documentation from their website. The text below is from the firmware download page.
9/24/15: CoinTerra is aware of the Shell Shock exploit in bash implementations lower than version 3.2.52(1)-release however our embedded firmware is not vulnerable because we are not running bash.
09/04/14 Firmware 0.7.56 MD5: 2ACCF7DE2603490128A2A3A8266CEECD
- More robust performance due to changes in USB interface, voltage algorithm, power monitoring, and more
- More accurate temperature sensor calibration
- Avahi/Zeroconf support to easily find Terraminer IP addresses with mobile app
- Diagnostic Report in web UI
- Reset cgminer.conf from web UI
- Heartbleed fix (cgminer 4.3.5 and openssl 1.0.1g)
- Store cgminer logs on MMC so that they are available after system reboot
- Fixed minor bug that caused a corruption of cgminer.conf when removing middle entry from pool list in web UI
03/24/14 Firmware 0.7.6 MD5: B2250250EB6EDFF1E2D85B9C3B4E0974
The TerraMiners MAC address is now displayed in the web Control Panel page footer.
Added Identify On/Off option to physically locate TerraMiner by flashing CTR1 LED orange.
Added Restart System option to the Configuration screen to reboot the TerraMiner.
Fixed potential issue affecting some units which were showing lower-than-nominal performance at the pool.
Updated CGMiner to version 4.1.0.
Miscellaneous code fixes.
03/03/14 Firmware 0.6.48 MD5: 186EE9BB38605B279BE20B098C6C7EE5
- Changed bootup DHCP timeout from 9 seconds to 60 seconds to allow for slow auto-negotiation of some network switches.
- Added the ability to disable/enable root user for SSH/FTP security. Default is enabled. Set to disabled if you dont use SSH/FTP access to the TerraMiner.
- The CTR1 LED illuminates solid red if no Ethernet is found after booting. Reboot the TerraMiner with the Ethernet cable connected to the TerraMiner and your Internet connection.
- Updated CGMiner to version 3.12.3.
- Miscellaneous code fixes.
02/12/14 Firmware 0.6.32 MD5: FA3550B7044AFC7359DF3E455E0B74D5
Updated CGMiner to version 3.12.0
Miscellaneous code fixes.
For installation instructions and troubleshooting please see the TerraMiner User Guide