vˈɛɹiəs tʃˈeɪndʒᵻz ænd kəmpˈoʊnənt ˈʌpɡɹeɪdz hɐvbɪn mˌeɪd ɪn ɐn ɐtˈɛmpt tʊ ˌoʊvɚkˈʌm ɹᵻlˌaɪəbˈɪlᵻɾi ænd dˌʊɹɹəbˈɪlᵻɾi ˈɪʃuːz sˈʌfɚd baɪ ðɪ ɚɹˈɪdʒɪnəl dɪzˈaɪn.
Various changes and component upgrades have been made in an attempt to overcome reliability and durability issues suffered by the original design.