Routerboot Upgrade Fail

Hello,
I’m currently trying to upgrade a RB 433 AH but this error shows up:

[admin@MikroTik] > system routerboard print 
       routerboard: yes
             model: 433AH
     serial-number: 185C01F5008E
     firmware-type: ar7100
  factory-firmware: 2.15
  current-firmware: 2.29
  upgrade-firmware: 3.41
[admin@MikroTik] > system routerboard upgrade 
Do you really want to upgrade firmware? [y/n] 
y
ERROR: can not change firmware to this version, please try newer one

Any way to upgrade it?

Hi Companion,

Thank you! I’ve tested your procedure, nothing happen. =(

By the way I got success using serial xModem file transfer.

Routerboot:
From 2.29
To 3.41

Regards.

Try:
/system package update install
/system routerboard print
(…)
upgrade-firmware: (should update to a recent one)

and then
/system routerboard upgrade
/system reboot