Firmware updates require new download every time?

**efusco** · 03-21-2006, 10:06 AM

I'm sitting in the Waiting room at my Toyota dealer waiting for the SSC-50P and an oil change (40,000 miles). I was suprised when they told me it would take 3-4 hours to do the update b/c they had to connect with Toyota to install the software.

I had thought the software would require download into the THHT only once and then be ready for use each time it was needed (seemed logical enough to me anyway). But 2 of the service guys were adamant that this was, indeed, the case--download for every individual flash of the ECU.

Haven't others that have had this done said it took only about 1.5-2 hours?? Someone fill me in here.

**efusco** · 03-21-2006, 01:09 PM

Just at 4 hours. Apparently the first 2 attempts "wouldn't take", third try was the charm. No fried ECUs or anything.

I notice very little change in driving, perhaps the accelerator isn't as sensitive/takes more pressure to get the same amount of acceleration. Can't appreciate that it's any easier to get into stealth than before as others have observed, but temps are cold.

mikepaul · 03-21-2006, 01:16 PM

Perhaps Toyota should look into cable modems...

DaveinOlyWA · 03-21-2006, 01:25 PM

i had mine done on a sunday when meeting with Mike (ifixem) and Henry (hdrygas). it took two flashes, one at 35 min the other at 20. then a couple of codes caused by disconecting ECU to flash it were cleared. that took 5 mins. then reassembly and button up which took 5 mins. all the flashes were done from his handheld unit.

**edit**

Evan, keep an eye on your SOC range. after the flash, i seem to be able to do EV at a slightly lower level, but at the same time my max SOC is topping out at 75%. before the flash, i had two incidences exceeding 80%. now i cant even get close to that.

galaxee · 03-21-2006, 01:26 PM

they're overhauling TIS this summer. whole new system. hopefully will speed things up.

evan, i don't know the answer to your Q offhand. will have to ask.

jayman · 03-21-2006, 01:37 PM

Quote:

Originally posted by efusco@Mar 21 2006, 10:06 AM
Haven't others that have had this done said it took only about 1.5-2 hours?? Someone fill me in here.

[snapback]227798[/snapback]

Evan:

I think they're teasing you or something. That doesn't sound right

jay

**efusco** · 03-21-2006, 03:43 PM

Quote:

Originally posted by jayman@Mar 21 2006, 12:37 PM
Evan:

I think they're teasing you or something. That doesn't sound right

jay

[snapback]227931[/snapback]

Well, it took them 4 hours to get to the punch line of that joke....

Oh well, the car runs, I did my Prius ownerly duty of getting all reommended service performed....

hdrygas · 03-21-2006, 05:03 PM

I think Ifixem said the Baud rate for the THHS is like 600. That's why it takes so long to transfer. They also have to do the sealant grease part as well. Add in moving the car around doing the paperwork 2hours if they are on the ball.

jayman · 03-21-2006, 07:42 PM

Quote:

Originally posted by efusco@Mar 21 2006, 03:43 PM
Well, it took them 4 hours to get to the punch line of that joke....

Oh well, the car runs, I did my Prius ownerly duty of getting all reommended service performed....

[snapback]227993[/snapback]

E:

Yikes that is scary. I recommend heavy drinking!

j

galaxee · 03-21-2006, 08:17 PM

Quote:

Originally posted by hdrygas@Mar 21 2006, 05:03 PM
I think Ifixem said the Baud rate for the THHS is like 600. That's why it takes so long to transfer. They also have to do the sealant grease part as well. Add in moving the car around doing the paperwork 2hours if they are on the ball.

[snapback]228041[/snapback]

yes. that's it. insanely slow thht

03-21-2006, 10:06 AM	#1
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 12,703 My Car: 2004 Prius Package: #9 Nominated 1 Time in 1 Post TOTM Awards: 0 Friends: 20	I'm sitting in the Waiting room at my Toyota dealer waiting for the SSC-50P and an oil change (40,000 miles). I was suprised when they told me it would take 3-4 hours to do the update b/c they had to connect with Toyota to install the software. I had thought the software would require download into the THHT only once and then be ready for use each time it was needed (seemed logical enough to me anyway). But 2 of the service guys were adamant that this was, indeed, the case--download for every individual flash of the ECU. Haven't others that have had this done said it took only about 1.5-2 hours?? Someone fill me in here. __________________ Evan E. Fusco, MD Seaside 04BC9/OEM EVb/NAV & auto-BT/XM Radio, CAN-View, Shark Fin, BT Stiff. Plate, Skid Plate & Strut Support

03-21-2006, 01:25 PM	#4
DaveinOlyWA Opps !! I Did it Again!! Join Date: Apr 2004 Location: South Puget Sound, WA Posts: 9,221 My Car: 2006 Prius Package: #4 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 4	i had mine done on a sunday when meeting with Mike (ifixem) and Henry (hdrygas). it took two flashes, one at 35 min the other at 20. then a couple of codes caused by disconecting ECU to flash it were cleared. that took 5 mins. then reassembly and button up which took 5 mins. all the flashes were done from his handheld unit. edit Evan, keep an eye on your SOC range. after the flash, i seem to be able to do EV at a slightly lower level, but at the same time my max SOC is topping out at 75%. before the flash, i had two incidences exceeding 80%. now i cant even get close to that. __________________ My 2006: Last tank 457.6 miles @54.2 pump (54.3 computer) 7.12 cpm winter mpg 50.78 summer mpg 55.25 lifetime: 30,151.4 miles 53.13 mpg pump (54.37 mpg computer) 5.70 cpm My 2007 Zenn Driven 4358 miles, 2.08 cpm/ 201 mpg (at $4.24/gal), 3.74 miles/ Kwh Savings over my Prius $238.80 The Corolla...435.21 The REAL SAVINGS from not driving Corolla 544.07 +Prius=782.87 (excludes maintenance costs...would be unfair to ICE vehicles) My Plate: DUALPWR (Dual Power)

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03-21-2006, 01:09 PM	#2
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 12,703 My Car: 2004 Prius Package: #9 Nominated 1 Time in 1 Post TOTM Awards: 0 Friends: 20	Just at 4 hours. Apparently the first 2 attempts "wouldn't take", third try was the charm. No fried ECUs or anything. I notice very little change in driving, perhaps the accelerator isn't as sensitive/takes more pressure to get the same amount of acceleration. Can't appreciate that it's any easier to get into stealth than before as others have observed, but temps are cold.

03-21-2006, 01:16 PM	#3
mikepaul Senior Member Join Date: Dec 2003 Location: Columbia, SC Posts: 1,652 My Car: 2004 Prius Package: #9 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Perhaps Toyota should look into cable modems...

03-21-2006, 01:26 PM	#5
galaxee uphill battling Join Date: Mar 2005 Location: central NC/ western WI Posts: 8,781 My Car: 2005 Prius Package: #5 Nominated 5 Times in 3 Posts TOTM Awards: 0 Friends: 17	they're overhauling TIS this summer. whole new system. hopefully will speed things up. evan, i don't know the answer to your Q offhand. will have to ask.

03-21-2006, 05:03 PM	#8
hdrygas Senior Member Join Date: May 2004 Location: Olympia Wa Posts: 3,649 My Car: 2004 Prius Package: #9 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	I think Ifixem said the Baud rate for the THHS is like 600. That's why it takes so long to transfer. They also have to do the sealant grease part as well. Add in moving the car around doing the paperwork 2hours if they are on the ball.