I have a very strange "Bad image checksum" error on 1 Polycom-501 only.
BootROM 4.1.4
SIPload 3.1.8
(both are latest supported versions for this phone to my knowledge).
I've tried older versions of siploads and BootROM, combined and splitted for this phone, but nothing helps - it gets "Bad image checksum error". I'd suppose something is wrong the sipload or bootrom, but both are our standard versions accepted by 100s of phones (including several phones on the same subnet).
Here is extract from boot-log for this phone:
0518233631|so |3|00|Platform: Model=SoundPoint IP 501, Assembly=2345-11500-040 Rev=D 0518233631|so |3|00|Platform: Board=2345-11500-040 A 0518233631|so |3|00|Platform: MAC=XXXXXXXXXXXX, IP=Resolving, Subnet Mask=Resolving 0518233631|so |3|00|Platform: BootBlock=2.5.0 (11500_040) 06-Nov-04 08:08 0518233631|so |3|00|Application, main: Label=BOOT, Version=4.1.4.0122 28-Sep-09 21:32 0518233631|so |3|00|Application, main: P/N=3150-11069-414 0518233631|app1 |4|00|Initial log entry.
...
0518233648|cfg |3|00|Image 2345-11500-040.bootrom.ld has not changed 0518233655|cfg |3|00|New load header information: 0518233655|cfg |3|00|Code length: 0x00259B69 0518233655|cfg |3|00|Header check Sum: 0x20261D79 0518233655|cfg |3|00|Code check Sum: 0x13F9C1E9 0518233655|cfg |3|00|Options: 0x00000003 0518233655|cfg |4|00|Image option 3 cannot be checked 0518233655|cfg |3|00|Recognized application 0518233656|cfg |3|00|Using compatible image 0
...
0518233723|copy |3|00|Download of 'XXX/2345-11500-040.318.sip.ld' succeeded on attempt 1 (addr 1 of 1) 0518233725|cfg |4|00|Bad image checksum, expected=0x13F9C1ED got=0x13F9C1E9 0518233725|cfg |5|00|Error updating application 0518233725|cfg |3|00|Downloaded application image was errored 0518233725|app1 |4|00|Could not load time from 0.0.0.0(0.0.0.0). 0518233725|app1 |4|00|Application 2345-11500-040.318.sip.ld is not compatible with the phone. 0518233728|cfg |3|00|Application image not found in file system 0518233730|app1 |6|00|Error application is not present. 0518233730|app1 |6|00|Uploading boot log, time is MON MAY 18 23:37:30 2015
The phone has been reset to defaults and we have formatted file system (that's why application is not present in the file system).
In usual situation I'd suppose it's wrong sipload version (due to incorrect config file). But I'm pretty sure they are correct, so my only guess it's something (hardware?) with that particular phone that rejects known good software.
I tried to search for "bad image checksum" but wasn't very successful.
Would anyone else have any suggestions about this?