Question about Navman F20 GPS Receiver

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NAVMAN F20 failure - unable to detect internal memory

My Navman is 11 months old and when you turn it on the following message is displayed in red and it will not work.

NAVMAN F20 failure - unable to detect internal memory

It says to contact the customer service but I am still waiting ( several weeks) for a response.

Can any one please help me.
Thank You

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  • mutandgeoff Dec 29, 2007

    Thank you Navman, I paid to get update kit and no cant use my navman as says it has Internal Memory etc, impossible to use now

  • christysheer Aug 19, 2008

    NAVMAN F20 failure - unable to detect internal memory problem, and notify you when a new solution is offered

  • Anonymous Sep 02, 2008

    red writing comes up

  • Anonymous Sep 03, 2008

    same problem ,tried to reset still the same.


  • juanvflores Sep 09, 2008

    I have exactly the same problem. I noticed it started right after I downloaded the so called "update software" from the Navman web site. I called Navman for suggestions on how to solve the problem, and they gave me none. They want to charge me 145 dollars to fiz the problem. I told them that for 40 more I can buy a newer, bigger and better unbit from Garmin at my local Costco. "Fine", they said. They are terrible. I will stay away from this company's products from now on.

  • Anonymous Oct 03, 2008

    We have the same promblen no internal memory in red company will not take cate of problem

  • phillipuk01 Oct 19, 2008

    I need the bootloader file also for my F20 ( only used three times !! )

    I have a spare 256mb SD Card for this , the Service pack does not contain it .

    Can anyone help please?

    Thanks !!




  • maardu32 Nov 14, 2008

    I have the same problem . I have been using my F20 for last 2 months and I've got a message one day - unable to detect internal problem.

    I cant find the dealer in Denmark, I do not know what to do.

  • Anonymous Nov 20, 2008

    i have the same problem, i called tech support, they told me it out of warranty so they will charge 145 to fix it, seems to be it is a problem to all f series, this is a incompetent company who deserve been sue, its frustrating trying to find any solution for this problem, lets go to sue those thieves

  • Anonymous Dec 23, 2008

    my internal F20 navman MicroSD crash

    i try to find the firmware on the web but i don't find it

    please do you know were i can find it?




  • jykie Dec 27, 2008

    same problem same story fron navman.

  • grosber_brg Dec 29, 2008

    i lost my CD

  • ceilimac Apr 06, 2009

    Internal memory has failed. Contacted Navman who say system is guaranteed for 2 years, then £80 for new mother board!

  • Anonymous Apr 07, 2009

    Ridiculous, i just had that problem today just when i got lost

    they are not reliable at all

  • Anonymous Apr 23, 2009

    i have been told to download updatesv on to my satnav

  • Anonymous May 11, 2009

    same here (holland) i did not yet went back to the resale shop....

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16 Answers

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Hi,

I think that the micro SD card inside the GPS is not in the good position, it is necessary to remove the grey sticker on the rear of the GPS and open the hood to access the SD card and then you can plug it in good position.

DAMS

Posted on Apr 18, 2009

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Wow, I had the same problem. Dropped it on the floor and it started working again. What a gimp system.

Posted on Jun 22, 2009

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Dcurtis5 is CORRECT!!!! Give the mother******** thing a dam good whack on something hard. It really does fix the problem!!

thanks very much dcurtis5!!

Posted on May 15, 2009

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Bang that ************** on something hard. I had the same error, so I saw a couple of websites similar to this one. I decided to try and take it apart. I could not get the back off of it after I took the only two screws in it... SO I WENT CAVEMAN ON THE PIECE OF **** AND HIT IT AGAINST MY DESK AND IT TURNED ON AND STARTING WORKING AGAIN. GIVE IT A TRY WHAT CAN IT HURT??

Posted on Dec 22, 2008

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Had this same problem with my F20. When I read some of the other entries I though "what a bunch of Jokers"....give it a good bang and it will work. Yeah right..............but guess what ????
I gave mine a good bang and hey presto, good as new. From now on, when anything of mine stops working I'm going to give it a good bang (that includes the missus !)
Thanks guys.

Posted on Jul 24, 2009

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Same here - bashed it on the desk and hey presto - just like new.
But..... I will never buy a Navman product again - EVER!
Not only is the system so volatile, the maps you get with the system are totally out of date. Anybody know where I can get copies of New Maps?

Posted on Jul 24, 2009

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Omg i can't really believe i followed everyones advice and banged my satnav on a hard surfave but hey presto glad i did it works lol

Posted on Oct 11, 2009

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NAVMAN F20 failure - unable to detect internal memory
give it a good bang i did and it started to work again ,
babyduck

Posted on May 19, 2009

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It looks like several of us experienced the "internal memory failure" problem with our Navman F20 right after downloading upgrades from Navman.com
When I called them they told me that nobody else had had this problem and that I was the only one reporting it. They made me beleive my problem was one in a million. But by the number of complaints posted I see that a lot more people than just myself have experienced this problem. Do you think Navman is posting an upgrade that corrupts our devices once we downnload "software upgrades form their website so that we are forced to pay them $145.00 to fix it?
If this theory is true, I smell a class acton suit to Navman. Shall we get in contact with each other and discuss this problem further? If we get enough proof about it, may be a lawyer would be interested in our case, don't you think?
Let's show this company they can't treat their costumers like this.

Posted on Oct 12, 2008

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Hey, I tried this and it worked for me ... switch off the navman. Press the bottom RH button (with the up arrow or chevron symbol). Switch on while button still depressed.

Posted on Sep 06, 2009

My nav man worked fine for 2 years but as soon as i donwloaded the so called @update@ this problem accoured. Navman will not take responsibility and i and my friends and family will never buy another navman product again. I think they purposly f***** up my navman by corrupting it with their updates

Posted on Oct 12, 2008

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I have had this same problem took the gray sticker off the back of unit to access sd card. Wiggeled it around and yes straight away problem fixed.

Posted on Jul 05, 2012

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Same problem with mine...'unable to detect internl memory'
I hadnt read the post above re banging the unit but my fix may give the same result, different course of action.
I thought, maybe if a disconnect the battery, let the unit die, then re-connect. (this often works with industrial electronics)
Took the back off and the battery is connected to the circuit board with a connector. Disconnected, left for 5 minutes then re-connect. At the same time i made sure the memory card in there was secure...it seemed to be.
Turned it back on....it works !!!
So, it may have been a poor connection, and the bang everyone is giving their units just re-seats the card or battery connection.
Well worth a try either way...

Posted on Jul 07, 2010

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DO NOT WORY I HAVE JUST READ SOME SOLUTIONS ON THIS TAG WHICH SAYS "GIVE IT A GOOD WACK" AND HONSTLY I CAN NOT BELIVE IT IT WORKS HAHA WEL CHUFFED NICE 1

Posted on May 09, 2010

  • ADAMMITCHELL May 09, 2010

    WACK IT HONSTLY IT WORKS

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If u put a new sdc card in it and use the update it will work......without maps.. so the next step is to let this thing read the maps.. i'm trying to figure out which file does this to change the command for it.. any quesses?

Posted on Jun 23, 2009

  • seasideboy19 Nov 11, 2010

    Had my Navman tucked away in a drawer for ages - F series failure! Read the above re quick bash! And yes - a quick bash on my kitchen worktop - and guess what!! - It now works again!! Brilliant

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The same problem. F20 disassembled and tested internal micro SD flash - no file sistem. Restored file sistem, no errors but it look like no maps because smth wrong with files. Digging inet found that software depends on serial number of navman and micro SD.There is no solution to unlock navman F-series and write another program like iGo, Tom Tom :(. Maybe laiter.

Posted on Jan 02, 2008

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