This information can be downloaded from MediaTek as well, in a much larger file, comprising 30 days of satellite dataīut only 28 days with valid data seem to be present at all times. The EPO file describes where the GPS satellites are, in such a manner that it assists location and results in a very quick first lock - usually about 5 to 10 seconds. Normally the file is downloaded from Garmin when the watch is connected through USB or WiFi (7 days worth of data) or via Bluetooth Low Energy connecting through a mobile app (3 days data). The Garmin Forerunner make use of a so called EPO file (Extended Prediction Orbit) from the GPS-chip manufacturer MediaTek. I found this note buried on the web (also posted in the garmin forums in google cache)
I assume now it has maybe other data that has to be converted or stripped out?Īny technical experts out there that know what to do?
MEDIATEK GPS UPDATE CALIFORNIA ANDROID
I've found on the web that people in the past for Garmin and Android devices are usingĬurrently 276,480 bytes (270 KB) as of June 26 I do not trust third part services or apps to do this, we should be able to do it ourselves.ĮPO.BIN in my \GARMIN\REMOTESW is 64,512 bytes (63KB) dates 2020-June-03 People have manually updated this file in the past, wondering if I can do it now? With all of Garmin down now apparently express/app cannot update.
I've noticed GPS lock is taking forever now when I start in strange new places the watch has never seen before which means EPO.BIN is out of date?