Unbrick Synology DS918+

Hello,
Since you mentioned that the file is exactly the same as bios_full.bin, I tried again using the CH341A.
After reading the chip, the contents matched bios_full.bin, and the checksum was also correct.

I completely erased the ROM, wrote the BIOS again, and verified the checksum.
However, even though the RAM is installed, I’m still getting the following error:
“Memory training fail, In a Dead Loop: Acting.”

I also tried replacing the RAM, but the same issue persists.
Do you have any idea what might be causing this problem?

ChrisCheon Wrote:
-------------------------------------------------------
> Hello,
> Since you mentioned that the file is exactly the
> same as bios_full.bin, I tried again using the
> CH341A.
> After reading the chip, the contents matched
> bios_full.bin, and the checksum was also correct.
>
> I completely erased the ROM, wrote the BIOS again,
> and verified the checksum.
> However, even though the RAM is installed, I’m
> still getting the following error:
> “Memory training fail, In a Dead Loop:
> Acting.”
>
> I also tried replacing the RAM, but the same issue
> persists.
> Do you have any idea what might be causing this
> problem?

Unfortunately, this is pointing to a problem with your RAM, or with the mainboard. In the experience of this forum, the only time you see the Memory training message is when the RAM is not detected at boot.

bonjour, je suivais votre post, et cela m'a donné envie de restaurer mon ds218. j'ai un petit ch341, je viens de controler son fonctionnement, le petit truc important, c'est surtout que je souhaiterai trouver le Dump de l'eeprom , et je pense que cela sera compliqué à trouver, mais je demande, si quelqu'un a le dump d'un DS218 sous la main, je peux changer la MAC et le serial, puisse que j'ai bien létiquette ok, mais il me manque ce DUMP, ou un fichier que je puisse donc juste modifier le serial et sa MAC , j'ignore si c'est faisable, mais je l'espère...

donc merci pour ceux qui pourront maiguiller, car ave la pince je n'arrive pas à la tenir pour dumper l'eeprom d'origine, donc malheureusememnt sans ce dump, je suis un peu coincé, ou obliger de déssouder la puce, maias c'est encore du boulot, merci pour votre aide, salutations

> bonjour, je suivais votre post, et cela m'a donné
> envie de restaurer mon ds218. j'ai un petit ch341,
> je viens de controler son fonctionnement, le petit
> truc important, c'est surtout que je souhaiterai
> trouver le Dump de l'eeprom , et je pense que cela
> sera compliqué à trouver, mais je demande, si
> quelqu'un a le dump d'un DS218 sous la main, je
> peux changer la MAC et le serial, puisse que j'ai
> bien létiquette ok, mais il me manque ce DUMP, ou
> un fichier que je puisse donc juste modifier le
> serial et sa MAC , j'ignore si c'est faisable,
> mais je l'espère...
>
> donc merci pour ceux qui pourront maiguiller, car
> ave la pince je n'arrive pas à la tenir pour
> dumper l'eeprom d'origine, donc malheureusememnt
> sans ce dump, je suis un peu coincé, ou obliger
> de déssouder la puce, maias c'est encore du
> boulot, merci pour votre aide, salutations

Please translate to English before posting.

Quote

Hello, I was following your post, and it made me want to restore my DS218. I have a small CH341, and I just checked that it's working. The important thing is that I'd like to find the EEPROM dump, and I think that will be difficult to find. I'm asking if anyone has a DS218 dump handy. I can change the MAC and serial numbers, since I have the label, but I'm missing this dump, or a file that would allow me to just modify the serial and MAC address. I don't know if it's possible, but I hope so...

So thank you to anyone who can point me in the right direction, because I can't hold the tweezers to dump the original EEPROM. Unfortunately, without this dump, I'm a bit stuck, or forced to desolder the chip, but that's a lot of work. Thank you for your help, regards.

-bodhi
===========================
Forum Wiki
bodhi's corner (buy bodhi a beer)

Hi, I am stuck trying to fix the Synology DS920+ BIOS, which does not boot and just has a blinking blue light. I have read the BIOS from the original chip; it is 16 MB, but the new file I got from the firmware file is 8 MB. I have to read many posts to understand how to fix it but have been unable to do something. Can you please help me? I can send you both files, please, if you have time. I will appreciate it. Thanks.

Hello everyone, I dumping good my synology ds218 with ch341 ...I can read my memory , non
But, I dont understand what I need to do for rebuild spi memory in this eeprom.
I try to understand now and where I can found I new dump from original ds218 , but impossible in network , or blog, no dump for my Denver is available, is there any people can dump his memory ? Because impossible to found it for me regards.

Newtontech Wrote:
-------------------------------------------------------
> Hi, I am stuck trying to fix the Synology DS920+
> BIOS, which does not boot and just has a blinking
> blue light. I have read the BIOS from the original
> chip; it is 16 MB, but the new file I got from the
> firmware file is 8 MB. I have to read many posts
> to understand how to fix it but have been unable
> to do something. Can you please help me? I can
> send you both files, please, if you have time. I
> will appreciate it. Thanks.

Read the posts again. You don’t use the whole contents of the file you extracted from the pat file. The last step before flashing is to append zeros at the end of the file to bring to total size up to 16MB.

The code for the eeprom can be found in the Synology Diskstation ‘.pat’ files. You need to undo these files until you find the one containing the rom. Then, extract the actual binary code from that file and flash it to the correct chip. If you read the posts in this thread you will find everything you need. Good luck