RAS 1500 faulty image

[PA1GS]

I've tried to download software to a RS 1500 . Something went wrong and it gives the message

Running Power On Diagnostics Version 2.5.0 (B 159)
2 Percent Complete
ERROR !

Error Code -> 11020000 Port FG LRT Type EC1 EC2 EC3
Expected Data -> B1743E06 [01] [01][00 02][00] [00 00 00]
Received Data -> FFFFFFFF LRT = 2, Error Type = 0, Port = 1.
Mask -> 00000000
Address of Failure -> FFF900FC
Text Message -> ppcboot.dmf CRC Test Failed

Test # Test Name Port Time Status
-------+----------------------------------------------+------+------+--------
102 SDL2 CRC Boot Sector Test --------------------- (10) - FAILED

Enter 'C' to Continue with POST
'B' to Reboot
'Q' Quit and Load Operational Software

After pressing 'C' it continues with POST and after 56 % the following appears :

******************************************************************
** PROGRAM TRAP EXCEPTION **
** ---------------- **
** **
** BR0: 0xF0980316 BR1: 0x10594382 **
** BR2: 0x20594106 BR3: 0x0459087E **
** BR4: 0x00594101 BR5: 0x14594A0E **
** BR6: 0x00994A0E BR7: 0x10594A0E **
** SRR0: 0x00403000 SRR1: 0x00000200 **
** SRR2: 0x30000000 SRR3: 0x00000000 **
** BEAR: 0x00000000 BESR: 0x00000000 **
** DCCR: 0x80000000 DEAR: 0x00000000 **
** ESR: 0x08000000 EVPR: 0xFFFC0000 **
** EXIER: 0x00000000 EXISR: 0x00000003 **
** ICCR: 0x80000000 IOCR: 0x0000C000 **
** MSR: 0x00000200 PVR: 0x00000020 **
** PIT: 0x00000000 TBHI: 0x00000000 **
** TBLO: 0x8631FB7F TCR: 0xC3000000 **
** TSR: 0xEC000000 SPRG3: 0x000002CA **
**(If this exception occurred during POST, **
** SPRG3 contains executing test number) **
** **
******************************************************************

and then continuously :

Starting Operational Software
******************************************************************
** PROGRAM TRAP EXCEPTION **
** ---------------- **
** **
** BR0: 0xF0980316 BR1: 0x10594382 **
** BR2: 0x20594106 BR3: 0x0459087E **
** BR4: 0x00594101 BR5: 0x14594A0E **
** BR6: 0x00994A0E BR7: 0x10594A0E **
** SRR0: 0x00403000 SRR1: 0x00000200 **
** SRR2: 0x30000000 SRR3: 0x00000000 **
** BEAR: 0x00000000 BESR: 0x00000000 **
** DCCR: 0x80000000 DEAR: 0x00000000 **
** ESR: 0x08000000 EVPR: 0xFFFC0000 **
** EXIER: 0x00000000 EXISR: 0x00000003 **
** ICCR: 0x80000000 IOCR: 0x0000C000 **
** MSR: 0x00000200 PVR: 0x00000020 **
** PIT: 0x00000000 TBHI: 0x00000000 **
** TBLO: 0x8E24029F TCR: 0xC3000000 **
** TSR: 0xEC000000 SPRG3: 0x000002CA **
**(If this exception occurred during POST, **
** SPRG3 contains executing test number) **
** **


Is there any way I can bypass this and erase the flash memory so I can reload the software