Inititally my 876 runs c870-advipservicesk9-mz.124-15.T7.bin code which runs fine. However, I once tried c870-advipservicesk9-mz.124-24.T1.bin and now c870-advipservicesk9-mz.150-1.XA3.bin and the two last ones exhibit a weird problem that may be mtu...