Fafner

Used a generic 4gb pendrive as USB1, a Kingston 256GB UHS-I card as USB2 and a Lexar 128GB UHS-II card as USB3. Both cards used in conjunction with Lexar's own card reader (the one they used to include with their cards). Archives extracted using WinRAR on Windows 10. Stick/cards formatted to FAT32 using SD Card Formatter utility, no particular options used. Everything works fine, connected stuff ok, routes added in the phone app get imported, Android Auto is ok. There's just one small thing which isn't right. In my profile in the Lexus portal, I'm getting told I should register my Multimedia device to be able to download maps. But the multimedia device is already there, the reported ID is the right one. If I try to register the ID again, it does tell me it's already paired with another vehicle. No idea if I'll run into issues once I'll have to upgrade maps, I got 2020v1 already and the OTA check from the nav isn't giving errors (it obviously tells me I got the latest ones).

I'm tethering from my S10 using Bluetooth. Guess it should work with wi-fi tethering as well.

Hey all! I just signed up today but have been following this thread for some days now. Just to let you know that this morning I took the plunge and updated my UX250h with the stuff being talked about here. I searched using my VIN to be sure I was eligible for it. All went buttery smooth, there was just a moment where it did seem to stall for a couple of minutes, that was at 50% of the last sub-phase (USB3, "Pre Install" phase), but then it completed succesfully and after one last autostart and some seconds I reached the final confirmation page. Used an 8GB stick as USB1, a 256GB Kingston SD card as USB2 and a 128GB SD card as USB3, both cards used with a Lexar card reader. Everything formatted with SD Card Formatter on Windows 10. Basically: USB1, procedure starts by itself after some seconds --> Reboot when asked WITHOUT removing the stick --> Remove USB1 when told so and insert USB2 --> Manually start the update and allow it to proceed --> Turn engine off and back on when told so --> Remove USB2 and insert USB1 again, wait several seconds (30-40) until it starts by itself --> Remove USB1 when told so, turn engine off and back on --> Insert USB3 --> Manually start the update --> This one involves several autostarts and phases, just wait --> Remove USB3 when told so --> Turn engine off and back on --> Insert USB2 --> Manually start the update --> This will update audio to the latest 1075 release --> Turn engine off, wait 1 minute, turn it on and wait 2 minutes --> Done! I had to reconfigure settings (language, time, ...) and to recouple my phone, but link to MyLexus was kept, it wasn't necessary to reconfigure the account. As soon as the unit succeeds in connecting to internet, you'll get a message about you having succesfully migrated to MM19. Only thing left if you want is to update Navigation software from the installed 1120 release to the latest 1140. Has to be downloaded separately as it's not included in the packages.