Enable features in nuvi 22xx, 23xx, 24xx and 24x5 & 25x5

**lolypop000** · 8th November 2013, 07:58 PM

We found solution if you have after flash region 140 error that nuvi don't detect GTM antenne anymore.

Friend enable feature on nuvi 24x5 and when nuvi turn on, he have error that for using TMC you need antenne.
We try to erase reg41 but antenne still not detected, but on different nuvi GTM work with no problem.
Then we take old FW ( for 24x5 latest is 8.10 and we use version 6.60 ) and after this GTM antenne work again

Step by step if you have the same problem, ( its for all nuvi ):

1.) Remove gupdate.gcd from your nuvi
2.) Create backup folder GPX (also speed correction if you make some changes for speed )
3.) Download old FW for your nuvi
4.) with Rgn tool convert it to rgn ( you can also use cure tool but you must set to ORIGINAL )
5.) Flesh in pre boot and this is all, GTM will work again.
6.) Run Webupdater, MyDashboard or Garmin Express to update your device.

Big Thank's to @Kamele0N from another forum who report that after this procedure GTM work again on his nuvi.