DE2-115 Board - Can not erase Flash

Hi everyone,

i am trying to erase the Flash memory on my DE2-115 Board, so i can push a new file to it.

The problem is, it says: "Erase failed at offset 0". Maybe the table is corrupt?

$ nios2-flash-programmer --base=0xd0800000 --debug --erase-all
Using cable "USB-Blaster ", device 1, instance 0x00
Resetting and pausing target processor: OK
Found CFI table in 8 bit mode
Raw CFI query table read from device:
   0: 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ................
  10: 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ................
  20: 51 51 52 52 59 59 02 02  00 00 40 40 00 00 00 00  QQRRYY....@@....
  30: 00 00 00 00 00 00 27 27  36 36 00 00 00 00 07 07  ......''66......
  40: 07 07 0A 0A 00 00 03 03  05 05 04 04 00 00 17 17  ................
CFI query table read from device:
  10: 51 52 59 02 00 40 00 00  00 00 00 27 36 00 00 07  QRY..@.....'6...
  20: 07 0A 00 03 05 04 00 17  02 00 05 00 02 07 00 20  ...............
  30: 00 7E 00 00 01 00 00 00  00 00 00 00 00 00 00 00  .~..............
CFI extended table read from device:
   0: 50 52 49 31 33 10 02 01  00 08 00 00 02 B5 C5 02  PRI13...........
  10: 01 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ................
  20: 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ................
  30: 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ................
Read autoselect code 01-7E (in 8 bit mode)
No CFI override data for 
Device size is 8MByte
Erase regions are:
  offset        0:   8 x 8K
  offset    10000: 127 x 64K
Device supports AMD style programming algorithm
Multi-byte programming with 32 byte buffer
Sector erase timeout is 16s
Word program timeout is 1ms
Buffer program timeout is 4ms
              : Checksumming existing contents
00000000      : Needs erasing
00002000      : Needs erasing
00004000      : Needs erasing
00006000      : Needs erasing
00008000      : Needs erasing
0000A000      : Needs erasing
0000C000      : Needs erasing
0000E000      : Needs erasing
00010000      : Needs erasing
00020000      : Needs erasing
00030000      : Needs erasing
00040000      : Needs erasing
00050000      : Needs erasing
00060000      : Needs erasing
00070000      : Needs erasing
00080000      : Needs erasing
00090000      : Needs erasing
000A0000      : Needs erasing
000B0000      : Needs erasing
000C0000      : Needs erasing
000D0000      : Needs erasing
000E0000      : Needs erasing
000F0000      : Needs erasing
00100000      : Needs erasing
00110000      : Needs erasing
00120000      : Needs erasing
00130000      : Needs erasing
00140000      : Needs erasing
00150000      : Needs erasing
00160000      : Needs erasing
00170000      : Needs erasing
00180000      : Needs erasing
00190000      : Needs erasing
001A0000      : Needs erasing
001B0000      : Needs erasing
001C0000      : Needs erasing
001D0000      : Needs erasing
001E0000      : Needs erasing
001F0000      : Needs erasing
00200000      : Needs erasing
00210000      : Needs erasing
00220000      : Needs erasing
00230000      : Needs erasing
00240000      : Needs erasing
00250000      : Needs erasing
00260000      : Needs erasing
00270000      : Needs erasing
00280000      : Needs erasing
00290000      : Needs erasing
002A0000      : Needs erasing
002B0000      : Needs erasing
002C0000      : Needs erasing
002D0000      : Needs erasing
002E0000      : Needs erasing
002F0000      : Needs erasing
00300000      : Needs erasing
00310000      : Needs erasing
00320000      : Needs erasing
00330000      : Needs erasing
00340000      : Needs erasing
00350000      : Needs erasing
00360000      : Needs erasing
00370000      : Needs erasing
00380000      : Needs erasing
00390000      : Needs erasing
003A0000      : Needs erasing
003B0000      : Already erased
003C0000      : Already erased
003D0000      : Already erased
003E0000      : Already erased
003F0000      : Already erased
00400000      : Already erased
00410000      : Already erased
00420000      : Already erased
00430000      : Already erased
00440000      : Already erased
00450000      : Already erased
00460000      : Already erased
00470000      : Already erased
00480000      : Already erased
00490000      : Already erased
004A0000      : Already erased
004B0000      : Already erased
004C0000      : Already erased
004D0000      : Already erased
004E0000      : Already erased
004F0000      : Already erased
00500000      : Already erased
00510000      : Already erased
00520000      : Already erased
00530000      : Already erased
00540000      : Already erased
00550000      : Already erased
00560000      : Already erased
00570000      : Already erased
00580000      : Already erased
00590000      : Already erased
005A0000      : Already erased
005B0000      : Already erased
005C0000      : Already erased
005D0000      : Already erased
005E0000      : Already erased
005F0000      : Already erased
00600000      : Already erased
00610000      : Already erased
00620000      : Already erased
00630000      : Already erased
00640000      : Already erased
00650000      : Already erased
00660000      : Already erased
00670000      : Already erased
00680000      : Already erased
00690000      : Already erased
006A0000      : Already erased
006B0000      : Already erased
006C0000      : Already erased
006D0000      : Already erased
006E0000      : Already erased
006F0000      : Already erased
00700000      : Already erased
00710000      : Already erased
00720000      : Already erased
00730000      : Already erased
00740000      : Already erased
00750000      : Already erased
00760000      : Already erased
00770000      : Already erased
00780000      : Already erased
00790000      : Already erased
007A0000      : Already erased
007B0000      : Already erased
007C0000      : Already erased
007D0000      : Already erased
007E0000      : Already erased
007F0000      : Needs erasing
Checksums took 2.2s
00000000 ( 0%): Erasing
Erase failed at offset 0
Leaving target processor paused

Has anybody a hint for me?

With best regards,

Jan