First, find a reliable navigation website. There are many websites about GPS, some are professional, and some are too amateur. If you are a navigator of CAST, you can go directly to the BBS of CAST website. The content is very rich, the classification is very scientific, and it is clear at a glance. Of course, you need to register an ID, otherwise you can't reply and you can't download it. As shown in figure:

Second, choose the right model for your navigation. My own navigation is the 106 platform, so it's basically not wrong to go directly to the D 106 platform, or you can go directly to the Kay LiDE section, but you must read the instructions clearly, because the navigation hardware of the 106 platform only has 64M memory (which is also a very important aspect of Castar's criticism, which is stingy enough), if you choose the navigation or e-navigation system, In fact, as long as the navigation is new in content and accurate in positioning, it is of no great use if it is not 3D, as long as it is enough.

Third, download the upgrade files you need. I don't need to say much about this, just do it as needed. It should be noted that the upgrade package is different. KLD is upgraded four times a year, namely, spring, summer, autumn and winter. If you have a spring package, you only need the upgrade package for the next summer, which is basically several hundred megabytes. But if it's last year's version upgrade, it's best to download the lazy bag at a time, about 3.4G

Fourth, the most important thing is to upgrade.

(1) Preparation before installation. Take Kay LiDE as an example, the easiest way is to leave everything in the root directory of the original navigation card untouched (of course, you can also back it up on your computer and then format it, and finally send the file directly to the mobile disk), especially the configuration file. Take KLD as an example, here are the configuration files, all of which are in the root directory of your memory card. If there is a maplaunch.ini file, it means that you are a multi-graph; The second is the boot file; The third is the touch screen correction program; The last one doesn't know what it is, what version or model it should be. There is another important thing that must not be forgotten before installation: Take KLD as an example, you must first back up the NaviConfig.dll file in your NaviResFile folder, which is the port data file to be discussed below.

(2) installation. In fact, this is not an installation at all, but copying the downloaded map package to the card. KLD just replaces the original folder with the latest NaviOne folder. It should also be noted that there are few compressed files in the old version of the map (20 10 version), but the files with large data in the new map package are basically compressed, so it can be said for sure that there is no need to decompress them.

(3) port modification. If the map package you downloaded matches your model, you can omit this step, but many map packages must modify the port data. There are many modification tools, some of which are put directly in the folder, which is very convenient. The problem is that you may not know what port you are navigating. Here's how to know your port data.

Run the kld_conf file, drag the NaviConfig.dll file you backed up in advance to the address bar below, and your port data will come out.

Then you can modify it according to your original port data.

(5) One last thing that needs to be done. When you put the card back in the car, when you turn on the navigation, 100% will come out with "no configuration file". In fact, you just need to poke the hole (reset key) in the lower right corner with a small pin and wait for the navigation screen to come out.