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7th September 2020, 05:27 PM #1
NAV4 - raw dump, partitions data,..
ordered nav4 device for tests.. arrive this or next week..
bRAd Reviewed by bRAd on . NAV4 - raw dump, partitions data,.. ordered nav4 device for tests.. arrive this or next week.. Rating: 5
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The Following 11 Users Say Thank You to bRAd For This Useful Post:
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biggerdave (7th September 2020), felis69 (6th March 2021), feniceus (9th September 2020), laamim (19th September 2020), menta (25th October 2020), Orni (7th September 2020), Poteo_Roke (17th September 2020), R@me$h (25th September 2020), simba (7th September 2020), Xius27 (8th September 2020), yopy (23rd September 2020)
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17th September 2020, 12:33 AM #2
NAV4 arrived today (VIA 52)
by quick check it seems doable (dumping - system, data,..)
will make some tests tomorrow, now is time to go to beer
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The Following 11 Users Say Thank You to bRAd For This Useful Post:
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adrianm (15th October 2020), biggerdave (17th September 2020), chelnov (27th September 2020), felis69 (6th March 2021), mikeclarke (18th September 2020), OdoRosi (30th October 2020), Orni (18th September 2020), Poteo_Roke (17th September 2020), Xius27 (17th September 2020), yopy (23rd September 2020), zole (21st October 2020)
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30th October 2020, 04:22 AM #3
Hi, Any updates? Thank you.
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30th October 2020, 03:32 PM #4
SPAM HUNTER/KILLER
Please do not just post "thanks" but use the "thanks" button bottom/right or the reputation star "*" bottom/leftS i m p l e s
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The Following 6 Users Say Thank You to biggerdave For This Useful Post:
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adrianm (9th January 2021), asturcon57 (31st October 2020), Chauffeur1 (24th November 2020), felis69 (6th March 2021), OdoRosi (31st October 2020), yopy (6th November 2020)
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16th January 2021, 03:32 PM #5
Hi, I have a TomTom Start 40.
I updated it to the latest version, but it crashed a few days later. After switching on, it remained on the logo.
I changed the emmc flash, but the data in
3: rescue
4: content
partitions is damaged.
Does anyone have a dump for this navigation or NAV4?
Partition map:
1:uboot
2:fdt
3:rescue
4:content
How to make a dump from a broken flash
1. You need skills and appropriate equipment for desoldering and soldering flash memory.
- I use these adapters for reading and writing.
2. Create a dump under Linux
Take your time and use 512 bytes per second, which is the default.
Unplug the original flash memory and insert the adapter with a working emmc flash.
I used SDIN9DW4 32G SanDisk eMMC.
I lost a lot of time with THGBMFG8C4LBAIR 32G Toshiba eMMC, with it the navigation does not boot.
I have two hard drives, the first is sda and the second is sdb. For this reason, in my case the usb adapters are sdc, sdd. You may have sdb.
If you are lucky you already have a working emmc flash. Check if you can mount both partitions. Check the sha1sum values.
In my case, rootfs.img is corrupted.
Try mounting rootfs.img
/dev/sdc2 and fdt.bin contain information about s/n - license key, make backup and do not share it.
If you want to share a full backup:
Last edited by mystical; 15th February 2021 at 03:31 AM.
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16th January 2021, 10:02 PM #6
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felis69 (6th March 2021)
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15th February 2021, 04:11 AM #7
My special thanks to
1. Follow the above guide first.
2. Using tomtom-nav4-dump-bs512.bin for unbrick:
If there is a problem with the serial number, the navigation starts in rescue mode.
Copy fdt.bin to content partition.
Copy your files or manually edit the above files.
NB: If you use emmc larger than 8G, you can increase the partition size with GParted.
Before soldering the flash, check the sha1 sum on rootfs.img
If sha1 sum is different:
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The Following 3 Users Say Thank You to mystical For This Useful Post:
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9th April 2023, 12:30 AM #8
any one know pinout ? so i can short ( ground the DAT or CMD or CLK or DAT0 pin of the EMMC.start booting and release the pin quickly - BEFORE your hear the drums (so the EMMC is not used but only detected)
Log in with adb, and restore the data (full backup image?) to the internal EMMC
NB : To restore for example a corrupt bootloader, you need enter the following commands in a shell )
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22nd December 2023, 03:25 AM #9
WHY don't you make an explaination video about this topic :U will help many people
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20th March 2024, 05:23 PM #10
Hello guys, I have TomTom Start (GO) 40 Nav4, I tried to restore the backup, but something went wrong and now the navigator does not turn on, there is no TomTom screensaver, the backlight just turns on and that’s it, but when connected to the computer it is still detected with using a magic SD card in the Nav4Free.bat program like TomTom GO USB Device and the backup ends successfully, please help me restore the navigator(
Last edited by zergulez; 20th March 2024 at 05:54 PM.
iGO R3 HERE EUROPE 2023.Q4
Thank you very much for the contribution