and the Russian control computer were shown to being working well, and able to communicate with each other but initial tests showed glitches in data transmission between Zvezda and Nauka which could cause delays to ERA deployment. Communication links between the ISS, Russian Mission Control Centre, and the European Robotic Arm Support center in the Netherlands were successfully tested. Initial checks also included the validation of the external Man Machine Interface and that the ERA can communicate properly while connected to a base point located on the outside of the ISS. To validate the MMI an EVA was required. On 18 April the first in a series of space walks was conducted by Cosmonauts Oleg Artemyev and Denis Matveev; taking seven hours to complete. During the EVA the EVA-MMI was installed the outside of the station and subsequently conducted a diagnostic test to confirm that the panel was receiving power and in good working order. Following the completion of the installation of the EVA-MMI the cosmonauts removed covers from the arm's grapple fixtures and base plates, as well as on the elbow. Following the removal of the elbow covers handrails were installed on the arm. The second stage included the installation and validation of the ERA's transfer capabilities. During this stage both the internal and external MMI were evaluated. During an EVA an astronaut will remove the launch restraints keeping the ERA in its launch configuration as well as remove the remainder of launch covers. On 28 April 2022, the second of the series of space walks occurred, during which Artemyev and Martveev unstowed the arm from its launch position by releasing actuators enabling the arm's grip, freed additional launch locks, as well as installed handrails to ease working on and around the device. Following this the ERA was extend and commanded to attach to existing interfaces on Nauka, and moved to the forward-facing side of the module. During the EVA the arm was controlled by Sergey Korsakov. A third EVA in the series is scheduled to occur in mid-May and will be performed by Oleg Artemyev and Samantha Cristoforetti. On June 22, 2022, an attempt to connect to the BTL-3 grapple fixture was successful and perform the base command and control was changed to ERA EE1 from EE2 on BTL-2 fixtures. During this stage in upcoming EVA's cameras will be installed an astronaut will install the cameras on the