Instruction: Generate an answer to the question by utilizing the information contained in the document.

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Question: Will this work with a head unit that already has a cd-iv203 cable attached for appradio compatibility?
Document: Shipping to me was fantastic (early) as always with Amazon. Tracking was fantastic. The unit was just a POS and I should have just gone with using my smart phone and saved the time and expense of trying to get this Pioneer unit to work. The Pioneer tech support may or may not have been available. I could never get through to the customer service folks at Pioneer (network down). Amazon was wonderfully supportive as always. BuyBuy Digital was wonderful. Pioneer was...?
When an item by Pioneer can not be pre-checked by even a Pioneer authorized service tech with lots of experience; only to find the unit would not work, Pioneer has done everyone a disservice. For the exorbitant price, at least one should be able to have the unit checked for proper operation prior to complete tear-down of the vehicle dashboard. What should have been a simple 45 minute operation turned into a two+ hour torture session that left me wondering why I even tried.
Has all the bells and whistles of any other Navigation device.Size of module fits easily under dash or other desired location. There is a free update on Web site which is easy to update the included SD card.I have owned many GPS units and this is the best so far. It beats my OEM on my Sony Ford unit because it has more customization that is lacking on this unit.I highly recommend this Navigation add on to the Pioneer head unit.
Despite the limited/mixed reviews on the AVIC-U250, I still decided to pull the trigger to purchase and am very happy that I did. I don't like to use my standalone mobile phone for navigation and much prefer dash-based navigation systems. I have tried with much frustration to try to just use the navigation options found within my AVH-X8500BHS's AppRadio. The concept of AppRadio is so promising, but its implementation is horrible.
Wow,I've had this nav system for awhile and took it to the audio guys here,who didn't know how and still don't know how to get this p.o.s to work,i've tried myself and its still not working,no loose wiring and yes it has a bypass but that shouldn't matter,would not recommend buying this extra $300 worth of nothing
I bought this for my Pioneer 3400BH and I must say i'm very impressed. Navigation and traffic works really well. Graphics could be a little better, although you can set it to WVGA if your headunit supports it (mine does not). Set up was pretty straight forward. FYI, if you are using a parking brake bypass on your headunit, you will need most likely need to replace it to work with the U250. In any case, GOOD PRODUCT.
This process to download the latest maps and POIs took ~45 minutes. You just plug in the included SD card into your PC, run the toolkit, and everything else is relatively self-explanatory and automatic. The software also allows you to backup everything. You also get the option to buy additional maps from all over the world. Note that this is not necessary to get the system to work, but since some of the updates are free I figured I should just do it.Performance is acceptable.
Pretty great unit. Using with pioneer avh p4400bh. Wish it had better graphics but will take me where I need to go.
Many of the features are nice and are helpful but at the end of the day I want an accurate and reliable Nav system that will get me to point A to point B with as little fuss as possible. As I mentioned above many of the low end issues are livable but not at the price of this unit. I again reiterate the fact that this should not cost more than $200 at max.
Lane position information and speed limit display are both clearly displayed and useful. Traffic updates are free over the air and seems intuitive. Basically, the unit receives traffic event information from FM radio carriers and after you have programmed in a route, it will tell you if any of those events are along your path. The unit will give you detour options on how to avoid those traffic events.
Answer: No , it does'nt work Yust one at a time