How to erase single bonding?

You are correct to use GAPBOND_ERASE_SINGLEBOND.  Assuming you are passing an address into the GAPBondMgr_SetParameter() function that is actually in the bond table, this should work.  

Note that the bond will only be erased when there is an opportunity to do so in a way that doesn't break the BLE connection.  This means that the active connection must first be terminated.

I would recommend stepping through the following code in GAPBondMgr_SetParameter():

   case GAPBOND_ERASE_SINGLEBOND:
      if ( len == (1 + B_ADDR_LEN) )
      {
        uint8 idx;
        uint8 devAddr[B_ADDR_LEN];

        // Reverse bytes
        VOID osal_revmemcpy( devAddr, (uint8 *)pValue+1, B_ADDR_LEN );
        
        // Resolve address and find index
        idx = GAPBondMgr_ResolveAddr( *((uint8 *)pValue), devAddr, NULL );
        if ( idx < GAP_BONDINGS_MAX )
        {
          // Make sure there's no active connection
          if ( GAP_NumActiveConnections() == 0 )
          {
            // Erase bond
            VOID gapBondMgrEraseBonding( idx );
            
            // See if NV needs a compaction
            VOID osal_snv_compact( NV_COMPACT_THRESHOLD );
            
            // Make sure Bond RAM Shadow is up-to-date
            gapBondMgrReadBonds();
          }
          else
          {
            // Mark entry to be deleted when disconnected
            bondsToDelete[idx] = TRUE;
          }
        }
        else
        {
          ret = INVALIDPARAMETER;
        }
      }
      else
      {
        // Parameter is not the correct length
        ret = bleInvalidRange;
      }
      break;

Hi Dan,

You have locked the device from JTAG access so that is expected. To recover it you need to do a forced mass erase, found under the "wrench" in the upper right corner of SRF Programmer 2.

.:Svend