From time when kunix create this wonderful tool and popey suggested using RMPREPUSB till now we found something that save time and headache for user with no't working nuvi.
1.) Create cure with kunix tool
2.) Create backup of nuvi when you have mass storage access, if you don't have it
3.) Always after you use cure FW format nuvi with RMPREPUSB
4.) Add back backup if you have it. If you don't have it Create empty folder with name Garmin and turn off and back ON nuvi and you will have garmindevice.xml inside. ( if you have garmindevice.tmp just rename it to garmindevice.xml)
5.) Run webupdater and download all
6.) Use cure tool again, create ORIGINAL FW and flash in pre boot.
This procedure will save your time and headache
Thank you kunix for this great tool ( this tool save a lot of time), thank you popej for suggested RMPREPUSB ( this tool always work 100%) and thank all user who report if found something new when use this tool. Respect to all of you :)