Quote Originally Posted by golf1412 View Post
ทำอย่างไร ให้กลับไปใช้ Firmware 2.80
เพราะตอนนี้ Firmware ผมอยู่ที่ 7.50

How to get back to Firmware 2.80.
Because this Firmware. I was at 7:50.
What Nuvi model are you talking about? Is it 205W?
Was the firmware Sg/My 2.8 and is now US 7.5?
You might want to open a new thread because this is for TSM 12.1.