SG300-28 switch in boot loop after firmware upgrade

After performing a firmware upgrade on an SG300-20 switch from ver 1.1.0.73 to 1.2.5.70 the switch now boots up with the following error and resets:
30-Aug-2011 10:47:33 %L1Mngr-F-PARAMTOOLONG: csco-sb parameter %s is too long.
The attached file contains a full output of the console boot process.
I have tried loading different versions from the console, but all produce the same error.
Has any one any idea how to resolve this issue?
Thanks
Des

Hello Tom, Thanks for your reply,
I had done the process before with the 3 firmwares offered in the cisco website. I did it again, and i get a boot loop again, with following error:
%L1Mngr-F-PARAMTOOLONG: csco-sb parameter serialNo is too long.
Any ideas?
Thank you,
Nico
Console
     Startup Menu
[1] Download Software
[2] Erase Flash File
[3] Password Recovery Procedure
[4] Set Terminal Baud-Rate
[5] Stack menu
[6] Back
Enter your choice or press 'ESC' to exit:
Downloading code using XMODEM.
-- Download complete --
Calculating file's checksum...OK
Erasing FLASH ->>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Writing to flash 0x6aa500 records...
Setting checksum: 0x350925f6 , Address: 0x0
OK.
Flash programming success.
Perform WARM BOOT ...
Boot1 Checksum Test...............................PASS
Boot2 Checksum Test...............................PASS
Flash Image Validation Test.......................PASS
BOOT Software Version 1.0.0.4 Built 08-Apr-2010 16:37:57
Networking device with Marvell ARM CPU core. 128 MByte SDRAM.
I-Cache 16 KB. D-Cache 16 KB. L2 Cache 256 KB. Cache Enabled.
MAC Address   : 58:35:d9:96:7f:5d.
Autoboot in 2 seconds - press RETURN or Esc. to abort and enter prom.
Preparing to decompress...
100%
Decompressing SW from image-1
100%
OK
Running from RAM...
Board ID is 22
Device ID 0xdf5111ab
*** Running SW Ver. 1.2.7.76 Date 19-Jul-2012 Time 17:54:43 ***
HW version is V
Base Mac address is: 58:35:d9:96:7f:5d
Dram size is : 128M bytes
Dram first block size is : 101376K bytes
Dram first PTR is : 0x1900000
Dram second block size is : 4096K bytes
Dram second PTR is : 0x7C00000
Flash size is: 16M
19-Jul-2012 17:54:46 %CDB-I-LOADCONFIG: Loading running configuration.
19-Jul-2012 17:54:47 %CDB-I-LOADCONFIG: Loading startup configuration.
Device configuration:
Slot 1 - SF302-08MP
Device 0: GT_98DX1005 (AlleyCat)
-- Unit Standalone                --
Tapi Version: v1.9.5
Core Version: v1.9.5
19-Jul-2012 17:55:02 %L1Mngr-F-PARAMTOOLONG: csco-sb parameter serialNo is too l
ong.
***** FATAL ERROR *****
Reporting Task: ROOT.
Software Version: 1.2.7.76 (date 19-Jul-2012 time 17:54:43)
***** DEBUG *****
DEBUG LOG IS EMPTY
0x16a614
0x167054
0x6bdc18
0x490518
0x4959e4
0x495bac
0x815674
0x816b10
0x817e64
0x1d51e8
0x1cb010
0x121d3c
***************** SYSTEM RESET *****************

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=======================
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