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: 17,228 My Car: 2004 Prius Model: Package: #9 Thanks: 49 Thanked 249 Times in 148 Posts Friends: 37	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 "It's a damn poor mind that can only think of one way to spell a word." -Andrew Jackson

03-21-2006, 01:25 PM	#4
DaveinOlyWA 3rd Time was Solariffic!! Join Date: Apr 2004 Location: South Puget Sound, WA Posts: 12,375 My Car: 2010 Prius Model: IV Package: Solar Roof Thanks: 24 Thanked 121 Times in 103 Posts Friends: 10	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 Blue 2010 : Last tank 541.9 @ 49.48 pump (56.7 MFD) 5.54 CPM, 21 MPH, Lifetime:5442.2 miles 56.5 MPG pump. (62.22 MFD) 4.72 CPM. Summer MPG 57.4 Winter: 49.5 My 2006 SPM: Last tank 376.6 miles @38.21 pump (40.8 MFD) 7.17 cpm winter mpg 49.64 summer mpg 53.41 lifetime: 42,563.5 miles 51.5 mpg pump (52.7 mpg MFD) 5.51 cpm My 2007 Zenn total "fuel cost" $166.58 on "about" 9599.7 miles. 1.74 cents per mile (granted i plug in for free at work!!) My Plate: DUALPWR (Dual Power)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Does Your State Require a Front License Plate? Ask Mr. Traffic.	hb06	Fred's House of Pancakes	11	08-19-2009 01:57 AM
Different firmware in 08 vs previous models?	h311b3nt	Gen II Prius Main Forum	5	10-11-2007 10:52 PM
PRIUS '06 ECU Firmware	TheAnnoyingOne	Fred's House of Pancakes	3	05-10-2007 02:21 AM
U.S. to Require Passports for Nearly All	hb06	Fred's House of Pancakes	6	11-22-2006 10:04 AM
Firmware hack?	chuckieland	Gen II Prius Modifications	2	07-10-2006 12:15 AM

03-21-2006, 01:09 PM	#2
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 17,228 My Car: 2004 Prius Model: Package: #9 Thanks: 49 Thanked 249 Times in 148 Posts Friends: 37	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: 1,742 My Car: 2004 Prius Model: Package: #9 Thanks: 1 Thanked 2 Times in 2 Posts Friends: 0	Perhaps Toyota should look into cable modems...

03-21-2006, 01:26 PM	#5
galaxee resident lab rat Join Date: Mar 2005 Location: boilermaker territory Posts: 9,675 My Car: 2005 Prius Model: N/A Package: #5 Thanks: 0 Thanked 93 Times in 37 Posts Friends: 26	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: 3,650 My Car: 2004 Prius Model: Package: #9 Thanks: 0 Thanked 2 Times in 2 Posts 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.