I recently bought this unit worked well on start up first time on downloaded dash command and connect obd via Bluetooth ran it a couple miles . got back home shut the car down and unit went off too. come back out later turn on the unit everything is working fine but the Bluetooth the paired devices don't show nor does it connect or find anything. help? this unit is pretty neat but without Bluetooth I see no use.

 

Is a problem of some of the MCU, is also a know problem. Check you MCU version and also check what OBD2 your using there are some that have problems.

 

what mcu version should I be on ? And I have the elm
237. Bluetooth doesn't connect to anything not just the one it was working fine in the first startup .

 

Use the 2.51 and the May System Update then delete both Bluetooth and then add odbii first and then your phone. It should work like that keep in mind that ELM 327 that is sold with the unit is sort of a cheap replica and lag. I have ODBlink MX and has no lag

 

My phone nor the elm show in the Bluetooth anymore I press search it can keep going until the car is shut down. How do I this update .

 

Just download both dmcu and update to the root of the gps sd card.

 

which one do i do first the the MCU or the pd update

 

I personally do MCU first then System update

 

i have the ELM327.

its def. has a noticeable lag , specially at the gear indicator etc. / real life data.

SO now i ordered this one based on your recommendation, this is what you meant being that fast?

 

I got mine used off ebay, and then requested warranty since they have 3 years and they send me a new one.

if you do get this one or the LX you need to put the password of the Bluetooth to 1234 dont know why to pair it.

 

i am fine with 1234 for BT password for a head unit.
i am not nervous about hacking

but i think you can change it after paired it right?

 

My guess is yes, did not try it.

here is a small test i did today.
https://youtu.be/Uw4oStpewtw

 

cant open the link

 

I put the files on the root of the GPS SD card and its not finding anything when i hit update MCU. A file that says dmcu.img it found and i did that upgrade. Th MCU version is now MTCD_HA_V2.41_1
Mar 20 2017 19:13:54
When i hit system update is doesn't do anything either. I have both files on the SD card and can see them using file browser on the head unit.

 

I see if i have time to record a video, but they need to be on the root of the gps sd card and not in a folder.