Yes, if you delete it it will make a new one... as to the HU, I have no idea
Right I deleted the file and it has created a new logfile.txt, here is the beginning of the file
07.67:phatd:main : Media Daemon (phatd) $Revision: 1.217 $
07.69:phatd:main : Debug level = 10
Selected profile is: Default
08.04:phatd:main : Using /dos/exec.ini for exec.ini
08.14:phatd:fork_if_in: Spawning /dos/51d
08.15:phatd:fork_if_in: Program started (/dos/51d), pid=13, childno=0
08.78:51d :main :
--- 51d (Mar 3 2004 18:49:12) --- $Revision: 1.205 $
08.78:51d :main : Debug level = 10
09.12:phatd:main : Entering Main loop
09.13:phatd:main : Socket 2 has MSG_ID 2
09.50:51d :openserpor: /dev/ttyS1 open fd=11
09.50:51d :main : Old ISP timeout value set to 50000 uSec
09.50:51d :main : Rollins timeout value set to 100000 uSec
09.51:51d :test_uC_ve: f9 (249) ------------>
09.52:51d :test_uC_ve: <============ 53 (83)
09.52:51d :test_uC_ve: Got 53 for invalid header, must have ProtoPhat 2
09.52:51d :parse_pac : opening /dos/firmware.pac
09.52:51d :parse_pac : PAC file summary
09.52:51d :parse_pac : firmware name h: 39
09.52:51d :parse_pac : firmware name l: 50
09.52:51d :parse_pac : firmware ver : 07
09.52:51d :parse_pac : firmware base h: 0f
09.52:51d :parse_pac : firmware base l: fd
09.52:51d :parse_pac : firmware size h: 22
09.52:51d :parse_pac : firmware size l: b0
09.53:51d :send_arm_s: firmware_modification=4
09.54:51d :rw_packet : Buffering 10 at 0
09.54:51d :rw_packet : ########################################################
09.66:51d :rw_packet : 10 (16) ------------->
09.66:51d :rw_packet : Expecting HACK
09.66:51d :rw_packet : <============ ac (172)
09.66:51d :rw_packet : 07 (7) ------------->
09.67:51d :rw_packet : Expecting BACK
09.68:51d :rw_packet : <============ bd (189)
09.68:51d :rw_packet : 39 (57) ------------->
09.68:51d :rw_packet : Expecting BACK
09.69:51d :rw_packet : <============ bd (189)
09.69:51d :rw_packet : 50 (80) ------------->
09.69:51d :rw_packet : Expecting BACK
09.70:51d :rw_packet : <============ bd (189)
09.70:51d :rw_packet : 00 (0) ------------->
09.70:51d :rw_packet : Expecting BACK
09.71:51d :rw_packet : <============ bd (189)
09.71:51d :rw_packet : 04 (4) ------------->
09.71:51d :rw_packet : Expecting BACK
09.72:51d :rw_packet : <============ bd (189)
09.72:51d :rw_packet : 03 (3) ------------->
09.72:51d :rw_packet : Expecting BACK
09.73:51d :rw_packet : <============ bd (189)
09.73:51d :rw_packet : 59 (89) ------------->
09.73:51d :rw_packet : Expecting PACK
09.74:51d :rw_packet : <============ ce (206)
09.74:51d :rw_packet : <============ 11 (17)
09.74:51d :rw_packet : <============ 00 (0)
09.74:51d :rw_packet : <============ 06 (6)
09.74:51d :rw_packet : <============ 33 (51)
09.74:51d :rw_packet : <============ 01 (1)
09.74:51d :rw_packet : <============ b5 (181)
09.74:51d :rw_packet : <============ 14 (20)
09.74:51d :rw_packet : <============ 39 (57)
09.74:51d :rw_packet : <============ 50 (80)
09.74:51d :rw_packet : <============ 07 (7)
09.74:51d :rw_packet : <============ 00 (0)
09.74:51d :rw_packet : <============ 06 (6)
09.74:51d :rw_packet : <============ 00 (0)
09.75:51d :rw_packet : <============ 56 (86)
09.75:51d :rw_packet : <============ 21 (33)
09.75:51d :rw_packet : <============ df (223)
09.75:51d :rw_packet : ########################################################
09.75:51d :rw_packet : ce (206) ------------->
09.75:51d :rw_packet : ********************************************************
09.75:51d :processpac: Got Session: mode 0, run type 6, lot 33 01
09.76:phatd:log_bc : CPUid info:
Unique ID: 0x92132590
Random ID: 0x921325901a3409fb7b1057d5c711c42b
CPU: EP73xx, ver 0x02
Lot Code: 0x3301
09.79:51d :processpac: Initializing 1.2 DAC
09.79:51d :processpac: SSA head unit
09.79:51d :processpac: Extra help enabled
09.88:51d :processpac: Non-text head unit - will not load text
09.98:51d :rw_packet : ********************************************************
09.98:51d :rw_packet :
I am going to try and use the cd changer that used to be connected to the car. If that doesnt work either then I will know it is the HU. Otherwise I am totally stumped by this.