That's why I'm asking - to be sure there isn't something else I'm missing by keeping my 1600 (not 1550 or 1650) firmware version. If there is additional functionality greater than maintaining lock on the birds, I'd like to know. I'm not (and never have been) having an issue with locking on multiple satellites at all.
Most performance mods need a watch and timed course to demonstrate actual improvement. Few deliver the advertised claims. Many are actually worse than stock. The best performance mods are made to the driver.
Emotional arguments - They're not just for chicks anymore.
My NAV has developed the dropped GPS over the past three months. It wasn't too bad at first but now it won't correct itself for over 100Km! I showed the service manager when I went back about the wrong brake pads issue and he did a recalibration even though the GPS was not locked,...I didn't bother to tell him that it wouldn't fix the problem because I have to go back for the pads,...aggghhhh.
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2006 Lexus IS350 Lux Package
2009 Toyota RAV4 Limited V6
2009 Toyota Sienna LE
1989 Celica All-Trac Turbo (JDM ST185)
1992 Celica FWD GTS w/MR2 Turbo motor
You may want to call Lexus Customer Svc and tell them that you don't like the missing override. I for one, told them I won't buy another Lexus w/o a GPS override.
Phone 1-800-255-3987
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iS350 Tungsten Pearl / Sterling Leather w/ Sport Pkg & NAV
You may want to call Lexus Customer Svc and tell them that you don't like the missing override. I for one, told them I won't buy another Lexus w/o a GPS override.
Phone 1-800-255-3987
I was going to wait for the survey that you get in the mail... But ya, I will call them up for sure...
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'07 IS350 Black Sapphire/Black (Sport/Nav/ML/PA/HW/Z1/Front Spoiler GFX)
Nav Hack w/ Destination Entry While Moving Switch | DRL's off | Seatbelt Buzzer Off | HW Mod
# of visits to dealer since pickup: 2
You may want to call Lexus Customer Svc and tell them that you don't like the missing override. I for one, told them I won't buy another Lexus w/o a GPS override.
Phone 1-800-255-3987
you know it could be that they just missed getting the legal authorisation to implement the override before they had to lock down the features all throughout 06 and thus 07, maybe we'll see something different in 08 going forward.
It's a shame that the nav nanny isn't getting some attention in the car mag writeups. I credit the fact that virtually every review I read complained that you couldn't fully disable traction control with Lexus relenting and giving '07 buyers a working Trac off button.
It's a shame that the nav nanny isn't getting some attention in the car mag writeups. I credit the fact that virtually every review I read complained that you couldn't fully disable traction control with Lexus relenting and giving '07 buyers a working Trac off button.
So true! But you know, I think it's a larger problem of the magazines not talking about the navigation systems hardly at all! I mean, I can't clearly remember a single article saying more than 1 sentence about the navigation... It's more like just a few sentences about the climate control/radio/nav/misc functions all in one... Like talking about the INTERFACE in general (bmw's i-drive, etc)... They talk about ergonomics... They NEVER say "The new Gen 5 navigation has many changes over the previous gen" or stuff like that... They just say things like "the climate control functions are easily accessible from the navigation screen"...
You are 100% right, the mags should start talking about a $2000+ nav option and if it's worth it... We all know the mags HATE electronic nannies, so...
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'07 IS350 Black Sapphire/Black (Sport/Nav/ML/PA/HW/Z1/Front Spoiler GFX)
Nav Hack w/ Destination Entry While Moving Switch | DRL's off | Seatbelt Buzzer Off | HW Mod
# of visits to dealer since pickup: 2
you know it could be that they just missed getting the legal authorisation to implement the override before they had to lock down the features all throughout 06 and thus 07, maybe we'll see something different in 08 going forward.
Ken, I can't find it now, but didn't you have a problem playing a dvd-a disc in your system? I just tried a burned-dvd-a disc and I got NOTHIN, any suggestions? Anyone?
Hi all,
Hope that this post get's noticed after 2 months of the last reply.
Situation:
1. my car doesn't come with navigation and I bought one from ebay. my car is RX300 2002 and the dvd computer I bought is generation 4.
2. my navigation system is US system. running 04.02 map data version. It's fourth generation system.
3. I bought my country dvd which is also for fourth generation. map version is 2004-2005 (!!!!)
Problem:
when I put my country dvd it tells me that dvd is not correct.
Action I did:
I noticed what you did here and attempted to do the same. I copied my local dvd then overritten the loading.kwa file with the US file. here is the result:
Results:
- DVD is loaded and I get the "I agree" screen.
- Once I agree, I get the message that the system couldn't read the map data and I need to insert the correct disk.
Different things I did:
1. my country dvd is less than 300mb. So, the dvd i burned is not dual layer. it's regular one (is it a must to burn a DL dvd?)
2. I didn't do the fuse thing. I couldn't find any fuse that has the TV-1 name. My car is not loaded with navigation originally (could I do something else?)
3. regarding the buring mode and format, I didn't find the option "etcif". I'm using nero, imgburn and Ultra ISO. how can I do that? (i'm totally ignorant in these matters)
Appreciate any help you could offer and many thanks,
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'07 IS350 Black Sapphire/Black (Sport/Nav/ML/PA/HW/Z1/Front Spoiler GFX)
Nav Hack w/ Destination Entry While Moving Switch | DRL's off | Seatbelt Buzzer Off | HW Mod
# of visits to dealer since pickup: 2
Doing a hex edit compare is just about useless. I have the 1600 firmware which includes the GPS update but does not include the HVAC update. The 1600 firmware is 47 kb. The 1650 firmware is 73.4 kb. I browsed the 5.1/1600 with a hex editor, and there isn't much useful information (but you can see a complete list of the voice command error messages in more than one language...). It is also quite clear that this loading.kwi file covers the entire Toyota range. There is a lot of Prius specific information in the file for the hybrid drive system. So, the updates could be for multiple platforms, not just the ISx50 Gen 5 nav system.
I have some other tricks up my sleeve, but I'm a bit preoccupied with moving right now and doubt I'll have anything new on this anytime soon. When I do, I'll post something here.
Most performance mods need a watch and timed course to demonstrate actual improvement. Few deliver the advertised claims. Many are actually worse than stock. The best performance mods are made to the driver.
Emotional arguments - They're not just for chicks anymore.
Doing a hex edit compare is just about useless. I have the 1600 firmware which includes the GPS update but does not include the HVAC update. The 1600 firmware is 47 kb. The 1650 firmware is 73.4 kb. I browsed the 5.1/1600 with a hex editor, and there isn't much useful information (but you can see a complete list of the voice command error messages in more than one language...). It is also quite clear that this loading.kwi file covers the entire Toyota range. There is a lot of Prius specific information in the file for the hybrid drive system. So, the updates could be for multiple platforms, not just the ISx50 Gen 5 nav system.
I have some other tricks up my sleeve, but I'm a bit preoccupied with moving right now and doubt I'll have anything new on this anytime soon. When I do, I'll post something here.
Ya, doing a side-by-side comparison is not very helpful... But, you can see the override menu in both the old and new firmwares... So, the actual menu is still in there, but the key sequence to access it has either been changed or removed...
If someone really understood what was going on, they could figure out what bytes/characters in the old firmware represented "upper left, lower left, upper left, lower left" and then find if anything similar existed in the new firmware where the override has been changed/removed...
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'07 IS350 Black Sapphire/Black (Sport/Nav/ML/PA/HW/Z1/Front Spoiler GFX)
Nav Hack w/ Destination Entry While Moving Switch | DRL's off | Seatbelt Buzzer Off | HW Mod
# of visits to dealer since pickup: 2
Ya, doing a side-by-side comparison is not very helpful... But, you can see the override menu in both the old and new firmwares... So, the actual menu is still in there, but the key sequence to access it has either been changed or removed...
If someone really understood what was going on, they could figure out what bytes/characters in the old firmware represented "upper left, lower left, upper left, lower left" and then find if anything similar existed in the new firmware where the override has been changed/removed...
Ya, that's what I'm saying. I figured that the menu was still there. They either changed the sequence to get to it, or they disabled it all together. You'd think by now, in this day and age, that if someone knew the sequence it'd be leaked out by now. So it's possible that they simply disabled it.
But lets suppose they kept the logic to detect that same sequence, but instead of saying something like
"if 'key sequence' jump to override menu"
with something like
"if 'key sequence' do nothing"
The change from "jump to override menu" to "no operation" could be the change of just a few bytes. We might be able to change just these to enable going to that override menu. I have experience reverse-engineering ROM code, just by looking at the hex values.
Would anyone know what kind of microcontroller or microprocessor the NAV system uses to execute its code? That would help of course.
Ya, that's what I'm saying. I figured that the menu was still there. They either changed the sequence to get to it, or they disabled it all together. You'd think by now, in this day and age, that if someone knew the sequence it'd be leaked out by now. So it's possible that they simply disabled it.
But lets suppose they kept the logic to detect that same sequence, but instead of saying something like
"if 'key sequence' jump to override menu"
with something like
"if 'key sequence' do nothing"
The change from "jump to override menu" to "no operation" could be the change of just a few bytes. We might be able to change just these to enable going to that override menu. I have experience reverse-engineering ROM code, just by looking at the hex values.
Would anyone know what kind of microcontroller or microprocessor the NAV system uses to execute its code? That would help of course.
I agree... It could be simple to switch back...
In answer to your question, yes, we do know... It's a Hitachi SH-3 or SH-4 processor...
Details:
"CPU (IC201): Hitachi SH-3E, HD6417718R" (Credits to Sonartech)
And I bet I know your next question... And unfortunately, the answer is yes, we suspect the entire language/os is proprietary...
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'07 IS350 Black Sapphire/Black (Sport/Nav/ML/PA/HW/Z1/Front Spoiler GFX)
Nav Hack w/ Destination Entry While Moving Switch | DRL's off | Seatbelt Buzzer Off | HW Mod
# of visits to dealer since pickup: 2
Hybrid Mode
