Revert "Change voltages and add 400mHz Frequency"

This reverts commit 7ce442233b890ceaa9e40ce1562f6e87a0223203.
Revert "Use 4.6 Toolchain again"

This reverts commit 27867eb602b93c7117060f114070f48d7d1e0f7e.
Revert "Fix Voltages"

This reverts commit 0b2c4ce255d1d74309842cce85a6078ba570c0cc.