Maybe Sandisk is the way to go but what about the speed of the SD card? I have a theory that the iWay doesn't like the faster SD cards. What I ended up with was a 512m PQI brand card that works fine. I've had a similar problem getting it to read some 512 and 1g SD cards that where not Sandisk. I found this doing a search on SD cards for the iWay 100M and appreciate the find. I have 2 512MB cards, and I use them in either the GPS, or the camera, whatever needs it. In the area I normally cover, the stock 64MB card is all I use. I called Lowrance when I was looking to buy a new SD card, and bought a SanDisk at their recommendation. If you want to add a larger memory card to your Lowrance iWay/iFinder - do yourself a favor and save your sanity. Hopefully my pain will help someone else in the long run. I also know which SD cards to buy if I need more in the future! Oh well - I now have a WORKING registered 1GB SD card (Sandisk) and am very happy with the iWay 100M so far. When they say that the LEI card reader is picky and prefers Sandisk media, they MEAN it! The darn thing worked like a charm the first try! Finally, in desperation, I traded a card with a colleague and obtained a Sandisk 1GB. I could BROWSE the larger 1GB SD cards in the iWay and see that the files were there, but it REFUSED to load them at power-up. However, the iWay 100M would only load maps from the little Sandisk. Oh, I could create nice maps and successfully save them to the 1GB SD cards without errors or problems of any sort. The Kingston and Edge just simply would not load their maps at power-up. I uninstalled and re-installed Mapcreate in its entirety and had the SAME result (I could get Mapcreate to REGISTER all 3 cards with ease, but only the 128MB Sandisk MMC card that came with the iWay would actually allow maps to be read into the unit. I tried in vain SEVERAL times to get my Kingston and generic "Edge" brand 1GB SD cards to work - They resisted ALL attempts. That was until I became the owner of an LEI USB 1.1 MMC/SD Card reader. Since I am stubborn by nature, a "tech-geek", and work on computers and networks for a living, I was confident I could get a map loaded on just about any SD card (and have it load into the iWay 100M) fairly easily (I have used SEVERAL different name brand AND generic SD cards both at work and in my personal devices with a 100% success rate).
#Lowrance maps sd trial#
Thanks to many VERY helpful replies from friendly Groundspeak forum members (and some long hours of trial and error) I now have a working 1GB card loading maps!!!!!! The answer all along was the simple advice that both Lowrance (the company) and Lowrance owners kept repeating. AS some of you know (by way of my Lowrance antenna thread), I have been having difficulty getting 1GB SD cards to load maps in my new iWay 100M GPSr.