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Title: giac ecu Post by: tnel20 on September 17, 2011, 03:26:15 PM well i was doing a battery relocate today and i pulled my ecu out(only looked at it before)
and i decided to open it and it has a giac chip installed.I said giac flashed on the top so i never opened it to check.I have since flashed the ecu with another file and seems to be running ok but its anoter stg 3- file so i dont know if it really flashed anything over.Now do i need to replaced the chip or am i ok trying to flash over this chip again and begine tuning for my 80lb injectors. (http://i243.photobucket.com/albums/ff314/auditechs4/2011-09-17113945.jpg) (http://i243.photobucket.com/albums/ff314/auditechs4/2011-09-17114004.jpg) Title: Re: giac ecu Post by: gremlin on September 18, 2011, 05:49:16 AM o i dont know if it really flashed anything over.Now do i need to replaced the chip or am i ok trying to flash over this chip again and begine tuning for my 80lb injectors. You can't flash anything over this hardware crypt panel. If you want to change something you must delete this hardware addenium, place pure flash chip on the board and recover ECU in bootmode to original state. Then you can start tune and flashing as usualy. Title: Re: giac ecu Post by: tnel20 on September 18, 2011, 06:58:55 AM i was afraid of that. thanks
Title: Re: giac ecu Post by: tnel20 on September 18, 2011, 07:16:56 AM any clue why i was able to flash a file from here also a stg 3- file and have the rear o2's and egt's coded out?
Title: Re: giac ecu Post by: infinkc on September 18, 2011, 08:55:35 AM any clue why i was able to flash a file from here also a stg 3- file and have the rear o2's and egt's coded out? Only thing i can think of is it bypassed the encryption board, were you in boot mode? galleto? Title: Re: giac ecu Post by: nyet on September 18, 2011, 11:32:28 AM Some "encryption" boards simply swap around a few address/data lines.
In theory, there are several address/data lines you could swap around without affecting CFI (or flash vendor specific) eeprom flashing commands. They may have intentionally selected lines such that is the case to continue to allow flashing through OBD. Or maybe, just happenstance. If that is the case, there is no reason why Galletto flashing wouldn't work as is. The contents of the flash is "encrypted" but the ECU sees unencrypted data, whether it is running a working car, or the in the middle of boot mode read/write. That type of "encryption" btw is only intended to make reading the flash after desoldering it a bit more difficult. Just a wild ass guess, though. Title: Re: giac ecu Post by: tnel20 on September 18, 2011, 01:57:18 PM lol alright , well i found a solution to my problem so no need for thr giac chip
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