Hi,

I want to upgrade my nuvi 1300 with EU FW 5.8 (modified for JCV and LA - garmin-tutorials/190929-enable-features-your-nuvi-12xx-13xx-14xx-jcv-la-tts.html) by Japan FW.

1) Which number of JPN FW i have to use together with EU FW in RGN Tool?
2) Is it Ok, if I use for wf_all.bin (load from JPN FW) same HWID and SW Version as is used in original boot.bin in EU FW (e.g i must owerwrite JPN HWID 1202 and SW vers. 290 by EU HWID 972 and SW vers. 580)?
3) If i use the way describe in question 2) with JPN 290 or 300 together with EU 580, then I am not able to upgrade my nuvi, there is an error with USB connection. What is wrong?

Thanks