DEVO 8S USB DISK RAW

Hello,
I am French,
I do repair Devo 8s of my friend.
The problem is computer pc detect the usb disk is format RAW.
It's impossible to transfer new firmware because the devo 8s it's not detected by Devention Dfuse USB Upgrade Tools V2.0.
Can you give me the origin format of the memory usb of Devo 8s ?
Can you give me the procedure to convert raw / format origin usb disk .
The 4MB memory possible to change ? i am electronician
Thanks

First you need to put your Devo in DFU mode. Turn it off, press EXT key and keeping it pressed turn it on. Then it should be recognizable by Dfuse tool. There are two signs, one in Chinese and another is in English reading "Updating formware..." or something like this.

Upgrade firmware to Deviation.

Then you need to put Deviation's filesystem in place. Turn off your Devo and turn it on. If there is no valid filesystem it will turn on in USB drive mode. Format the disk, it's small so the default should be FAT32 (as far as I recall). I used Windows formatter and it works well.

Then copy Deviation files to the newly formatted disk.

Thank's victzh for your help

I am managed to comunicate whit the dfsue usb upgrade and i have upgrade deviation-devo8-v4.0.1.dfu.

I have restart devo 8s and i can format the usb disk (FAT).

I have copy and past the file on the usb disk execpt models and tx.ini.

I have restart the devo 8s and i am happy i can see the first menu of the lcd.

But i touch the lcd panel or i press any key the devo 8s bug.

So i transfer again the firmware and i would like to format usb disk but it's again impossible to format the usb disk.

I tested transfert firmware DEVO-8 Fw v1.0B.dfu the devo 8s bip after the restart and the screen is bug.
I transfert the library DEVO-8 Lib v0.0.5.dfu and i verify after upgrade and i have msg box " matching no good first difference at adresse 0X00010000 File byte is 0x57 Read Byte is 0X00".

No when press EXT KEY and keep it pressed turn it on the screen is bug and i have not the picture of transfert on the sreen devo 8s.

The memory is failed ?

I doesn't understand this problem

Thank

There is nobody for help me ?

Hook it to a pc running Linux and start gparted (patition manager).
Then check the USB drive.
If you have no access to such a pc, download a version of Puppy Linux (small/full write access/CD or USB stick based).

....or just a live iso image of gparted....

Thanks amax i will test with gparted.
But i think the firmware of the memories is failed.
It's possible to reset the memories and the boot software internal with an manipulation code?

excuse me for my english