First, the structure was strengthened, especially the Hard Upper Torso (HUT). Furthermore the screw couplings, which connect gloves and boots with sleeves and pants, were replaced with clip seals. These are easier to clean, to maintain and they aren't as vulnerable to pollution with sand as the old screw couplings were. Another modification of the structure was the mounting of a new carrying strap. The HUT is now wearable like a normal backpack.
"There were also changes in the Thermal Control System (TCS), which was nearly completely redesigned." Sebastian Sams comments on the upgrade sessions, "The liquid cooling was removed because during the tests it became clear that it wasn't as effective as expected and couldn't produce enough cooling power. This was also caused by the heavy burden w.r.t. power requirements and mass." Instead more powerful fans were added. They are able to supply cool air around the astronauts' belly and his head. Additionally a heating coil was added behind the top fan, so the helmet becomes heatable. It can be used as heater in cold environments and reduces the risk of fogging up of the visor.
A lot of smaller improvements were produced and implemented, e.g. new mountings for the WLAN-antenna and backup radio. Finally the HUT and Personal Life Support System (PLSS) was again varnished white and everything's now beautiful white and shiny again.
1st upgrade of Aouda.X
28. July 2009
In August 2009, first modifications and upgrades of Aouda were done at HTL Fulpmes based upon the experiences and lessons learned: Several tests performed during the Commissioning in Kramsach/Tyrol showed up some possible improvements of the suit
PolAres Schedule Update
30. November 2010: Suit Core Completion
Core complete - Aouda's hardware will be frozen at this point to allow a development of a small series. However, minor adjustments to the OBDH are still possible, mainly at the software side.

