RB2011 dont upgrade

Dears, i’ve already see some cases similar to mine , but i’m not able to make me sure about the right thing to do.

  1. I’ve turned on for the first time the RB and, sincerly, i dont remembes which ROS was runnig.
  2. i change the password
  3. I have downloaded and succefully installed ROS 6.42.7
  4. i’ve sent the RB to my customer (we use sometime the 2011 as CPE , calling PPPoe to our RB CCR1016)
  5. when installed in the client, the RB immediatly up the PPPoE session and allow me to connect via winbox.
  6. I’ve work in the RB for some time… no any problem..
  7. SUDDENLY some files appears in "FILE " and a line in SYSTEM>>SCHEDULER too.
    PANIC !!! I’ve deleted the files and the line too… (maybe a stupid reaction)

After some reboot… for my surprise, the ROS seem to be downgraded to 6.30.2.

Transfer newes upgrade files and reboot… no way.

Now i 've this incredible situation:

In "file i have 6.43.8 .npk files (downloades using “check upgrade”)
files npk.jpg
in the SYSTEM>>PACKAGES i’have a strange mix of different pakages
pakages.jpg
And in the SYSTEM>>ROUTERBOARD the following…
Firmware Version.jpg
Someone may help me to take a direction ? Net install option is not available.

Thank you in advance

Maybe you are victim of http://forum.mikrotik.com/t/urgent-security-reminder/124064/1