Windows should detect the dom as an normal USB Stick - you should see it in the device manager. I have used linux on my raspberry to make an image. I used the "dd" (disk dump) tool of linux as described here: How to use dd in Linux without destroying your disk
You are correct, I can see it as a drive station in device manager. Added a drive letter with diskpart and can see the files and made the image.
I see three partitions on the bios chip, two are filled with files. I can also download Bios files from Synology's website (see attachment after extracting with 7-zip).
Can you please indicate the files that need to be checked, replaced or corrected (e.g. only the EFI files)?
I have exchanged the following files with files from Synology website.
On the 94 MB partition:
zImage
rd.gz
Grub_cksum.syno
Checksum.syno
On the 16 MB partition:
zImage
rd.gz
GRUB_VER
I have the impression that the USB DOM is not read (no reading, no change).
So still no boat : , please advice?
The disk is visable in Chip Genius (VID and PID not correct). But in device manager the ID is still correct (see attachment)
So I tried to repair the link of UT165 chip e.g. with the USBest UT MPTool (UT.1.65.17.0) on a XP 32bit PC or with the USbest UT165 rescue v1.0.3.1 format tool. The rescue tool did not find the device (device not found, please insert device, at XP and W11). Further with US Best UT MPTool the Synology flash disk is visable and can be scanned.
Next step format the USB. If I format the disk in Windows (CDM > diskpart > list vol > sel vol 10 > format fs=fat) it does not update to VID F400 and PID F400. Tha advice is with RMPrepUSB
@all: I managed it to repair my Dom, the Synology is booting again. (YES!)
It´s definitly the UT165 Chip which needs to be replaced (see my Post above about compatibilty, revisions and Flash Chips). It stops working on USB 2.0 and only works on USB1.1 - on Linux (and Windows) it´s fine, the DS412+ needs definitly USB2.0. I suggest to also replace the flash chip because it´s aging, but it seems it´s only neccessary if the new UT165 revision it not regognizing the old flash chip. For this you need good soldering skills.
Perhaps an replacement USB Dom is also fine, when it´s configurable for VID and PID.
@Nats Once again: USE LINUX and dd (the third time!). You also need to replace the UT165 chip - without replacing you dont have a chance, it´s an hardware defect! Windows recognizes your USB DOM, the Synology not, same as here. You CANNOT REPAIR the USB Dom by replacing the files or Reformat it with the tools mentioned.
I am not sure, but I guess you have already destroyed the contents of your Dom (you wrote: "format the USB") - there is more than only the files on it - there is also a boot loader and at least one more partition. Once again: use Linux, use dd to make an image of the working USB Dom in 1.1 Mode! Synology also uses Linux and the file-Systems are not compatible.
When your are in luck, it´s not too late, make an image, replace the chip, try your luck.
But please: Read the posts, everything what you need is described in this Thread.
Sebastian
-- post merged: --
Hi again,
here is an update about the hardware configuration(s) and the used Software versions.
In all cases the UT165 must be fully ok (=already replaced), working also in USB2 Mode!
1. Original Hardware (on my DOM): UT165 Rev. A0A, Flash Chip: Samsung K9F1G08U0D
confirmed: UT165_rescue_v1.0.3.1 for firmware update/recovery, UT165_1.65.17.0 for configuring
2. replaced UT165 with Rev A1B, replaced Flash Chip with Samsung K9F8G08U0M (Pin compatible)
confirmed: USBest_URescue_v1.3.0.71 for firmware update/recovery, UT165_V1.65.30.0 for configuring
3. replaced UT165 with Rev A1B, original Flash Chip: Samsung K9F1G08U0D
UT165_rescue_v1.0.3.1 does NOT recognize the UT165 Rev A1B and/or the flash chip.
perhaps someone could give the newer versions (USBest_URescue_v1.3.0.71, UT165_V1.65.30.0) a try.
Thanks for the clear explanation. I found two models of the UT148-L48 chip, but I'm not sure I can use them. Because it's unclear to me how to link this to the compatibility list you posted.
One Amazon and one on Aliexpress.
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, please advice?
