Switch PowerConnect 5548 em loop ( Reiniciando)

Olá,

Possuo um switch Dell PowerConnect 5548 S/TAG 9QBH7M1 que está em looping inicia e reboota constantemente não tenho mais acesso via web/cli somente via console que mostra o seguinte erro:

Startup Menu

[1] Download Software
[2] Erase Flash File
[3] Password Recovery Procedure
[4] Set Terminal Baud-Rate
[5] Stack menu
:emotion-14: 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 0x5fee80 records...
Setting checksum: 0x2f54621a , 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 1.0.0.12 Built 25-Oct-2010 11:09:55

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PowerConnect 5548 device with Marvell ARM CPU core. 256 MByte SDRAM.
I-Cache 16 KB. D-Cache 16 KB. L2 Cache 256 KB. Cache Enabled.

MAC Address : d0:67:e5:7e:9f:6f.

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...

*********************************************************************
*** Running SW Ver. 4.1.0.20 Date 18-Aug-2015 Time 11:35:45 ***
*********************************************************************

HW version is 00.00.02
Base Mac address is: d0:67:e5:7e:9f:6f
Dram size is : 256M bytes
Dram first block size is : 229376K bytes
Dram first PTR is : 0x1C00000
Dram second block size is : 4096K bytes
Dram second PTR is : 0xFC00000
Flash size is: 16M
01-Oct-2006 11:35:50 %CDB-I-LOADCONFIG: Loading running configuration.
01-Oct-2006 11:35:50 %CDB-I-LOADCONFIG: Loading startup configuration.
Device configuration:
Slot 1 - PowerConnect 5548
Device 0: GT_98DX4122 (BobCat)
Device 1: GT_98DX4123 (BobCat)

------------------------------------
-- Unit Number 2 --
------------------------------------

BobCat, Revision(A2), Cpu(800)
BobCat, Revision(A2), Cpu(800)
01-Oct-2006 11:35:56 %Box-F-UNQ-FAILED: Function UNQP_late_init_hook: Error reading from Port 4. Might be HW problem

***** FATAL ERROR *****
Reporting Task: ROOT.
Software Version: 4.1.0.20 (date 18-Aug-2015 time 11:35:45)
0x19f5cc
0x19c230
0x6e141c
0x4d6070
0x4d6968
0x4d6b3c
0x92d09c
0x964120
0x8b5158
0x8b7bb0
0x70a318
0x202ac0
0x1548d8

**************************************************
***************** SYSTEM RESET *****************
**************************************************

 Consegui atualizar o firmware para última versão disponível no site "https://www.dell.com/support/home/br/pt/brbsdt1/product-support/servicetag/9QBH7M1/drivers"

Algo que possa ser feito? Peço a ajudas dos amigos.

Agradeço a atenção.

PS: Já atualizei o firmware em 3 versões diferentes até a última.

PS: Caso similar "http://es.community.dell.com/support_forums/network_switches/f/67/t/5344

PS: Já tentei a opção [2] Erase Flash File  informando "config" mas também não surtiu efeito.