HOW TO RECOVER FROM CORRUPTED FLASH

Fact:

• 3C35100
• CoreBuilder 3500 Extended Software
• Flash

Symptom:

• System fails to boot after upgrading from version 1.0.0 to 2.0.2

Fix:

The following procedure describes the Recovery of the Software:

CB3500 - software recovery for SW ver 1.0 only. Network boot, (Code to DRam)

• Connect a Server to the Out Of Band port and boot CB3500
• CTRL/X and Enter twice during the boot sequence , the following

  prompt will show CoreBuilder Boot> ? (to list commands) Corebuilder Boot> c (to enter boot controls)

• ip -address of OOB port (Network address must be in the range of servers address)
• subnet mask (must be in the range of servers address)
• boot flag - 0x130000 (loads SW to DRam)
• primary boot source - Network (select Network to download from server)
• filename (enter Path and File name)
• host ip
• transfer mechanism (TFTP or FTP)
• prompts for user name and password (FTP only) Corebuilder Boot> r (reboot the CB3500) Code now downloads to DRam from Out Of Band port , after this operation make sure to copy the SW into flash via the CB3500 menu (System/SoftwareUpdate). Reset the primary boot source back to load from flash. As before up to : Corebuilder Boot> c (set parameters back to original)

  1. boot flag 0x130000
  2. primary boot source - Flash (set boot source pointer to flash)

  Corebuilder Boot> r (reboot system) Software recovery procedure for SW ver 1.1 , 1.1.1 and 1.2.0 only. CoreBuilder 3500 (rev 0.0) - System ID 405300 Extended Software Version 1.1.1 - Built 05/19/98 07:01:35 PM

• Connect a Server to the Out Of Band port and boot CB3500
• Press the enter key during the boot sequence , the following

  prompt will show
  CoreBuilder Boot> set CoreBuilder Boot Menu display Display current boot parameters primary Set primary boot source Usage: primary <flash | network> flags Set boot flags Usage: flags <hexValue> network Network parameters menu .. Back to previous menu ? Show menu CoreBuilder Boot> set> primary Usage: primary <flash | network> CoreBuilder Boot> set> network CoreBuilder Boot Menu display Display current boot parameters systemIp Set system IP address Usage: systemIp <ipAddress>
  subnetMask Set IP subnet mask Usage: subnetMask <subnet> gateway Set default gateway address Usage: gateway <ipAddress> hostIp Set host IP address Usage: hostIp <ipAddress> filename Set boot file name Usage: filename <file> .. Back to previous menu ? Show menu CoreBuilder Boot> set> network> display CoreBuilder Boot Parameters Primary Boot Source: flash Secondary Boot Source: network Network Boot Parameters System IP Address: 0.0.0.0 IP Subnet Mask: 0.0.0.0 Gateway IP Address: 0.0.0.0 Host IP Address: 0.0.0.0 Boot file name: Boot Flags: 0x21B0000 CoreBuilder Boot>reboot (Code now downloads to DRam from Out Of Band port)
  
  — David Gonzalez 2021/04/13 16:01