Fortigate 200A the tab “changes mode” in web manager is missing

[g_rayan]

hi guys

I recently bought two FortiGate 200A on ebay  for my own training and one of them the tab “changes mode” in internal interface web manager is missing . they have the same firmware  except bios is different 04000003 and 04000000 I notice that when you type get system status the line Internal Switch mode: interface is missing ?   can someone  please help me to resolve this problem ?

I do not know if its just the firmware are bad or the bios ?

The firmware is FGT_200A-v400-build0689-FORTINET.out

the other model works correctly 

thanks 

[Jeff_FTNT]

BIOS is generated and binding with SN number, can not do that.Thanks.

[g_rayan]

according to you the problem of my router comes from the bios or not ?

[Jeff_FTNT]

I am not sure, you may verify it with exchange BIOS chip on your two firewall. 

[g_rayan]

ok I 'll try that tomorrow and I 'll let you know 

[g_rayan]

es that you know the procedure to upgrade the bios ?

[Jeff_FTNT]

BIOS can not upgrade. It generate with specific serial number and matched certificate.