Do you ever ask yourself that why Nuvi 255w & Nuvi 205W which share the same firmware,
then Nuvi 255W can be used the Lane asist and JCV feature, but Nuvi 205W NOT.
You may think that it's because the Hardware related.
Your got notice that, every times when you switch on your Nuvi, which will first check your unit system and store into a file which is GarminDevice.xml
I doubt the Nuvi 255W & Nuvi 205W with different hardware. I always think that Garmin has write the firmware into Read Only memory in order to differential both model.
I always think that if you can flash the Nuvi 205W ROM, and make it as other model like 255W.
Nuvi 255W taiwan can flash to SgMy version and gain lane assist/JCV,
but Nuvi 205 flash to SgMY version but still not gain the lane assist/ JCV.
I found a interesting, but I can't confirm it'work or not, because I don't have Nuvi 205W taiwan on my hand.
How to doing it ? read carefully on below:
1) Flashing the Taiwan Nuvi 205W with US Oldest version v2.80 firmware which can change your Nuvi 205W to 2W series.
after this firmware flashing, your Nuvi no more as a nuvi 205W, it's Nuvi 2W already.
2) After the above flashing, your nuvi is 2W series with US software version 2.80 with US HWID:827.
And you can go to the blog to proceed firmware conversion to SgMY software.
the blog link is http://nuvi255wfirmware.blogspot.com/20 ... w-set.html
you can follow the step from above blogspot.
after the step, may be you gain lane assist/JCV feature.
If you have taiwan Nuvi 205W, and you have brave to try, you may try.
After you success to do it, please share it here to everybody.
If who brave to try, PM me for the US firmware v2.80.
Remind: Take it at your OWN RISK.
Remark: Purpose using Oldest Nuvi 2W firmware flashing is to change the model from Nuvi 205W to Nuvi 2W. then, no more limitation of JCV/lane assist for 205W model.
Good luck
for help me testing. I'm glad to hear that Nuvi 200W also can apply this firmware and gain the JCV/Lane Assist.
