How to install the old version of DSM.

[luyvlei]

I have tried to install dsm-7.0.1-42218. But when loading the system, it automatically download the latest dsm-7.1.1-42962.

It seems that my disk has some file created in dsm-7.1.1-42962 so I must upgrade the DSM to the latest version. Is there any solution to deal this problem? The dsm7.1.1 need to register for the "Advanced Media Extensions" to play the video of HEVC format but I don't have a correct SN/MAC pair for registration .

[luyvlei]

I have successfully downgrade the DSM version to 7.0.1-42218 with the help of this article(But not all the same). Here I share my process:

1. Download the pat file of dsm-7.0.1-42218 in https://archive.synology.com/download/Os/DSM
2. Build the dsm-7.0.1-42218 via arpl and then boot the system.
3. Open the dsm via xxx.xxx.xxx.xxx:5000 and it will prompt me that I should update the dsm. Choose to upload the pat file 'DSM_DS920+_42218.pat' instead of download online.
4. Then it will show that this version is not lastest and upgrade failed. Stay on this page and use telnet to login the device, use the root user and the password is empty. Edit the file /etc.defaults/VERSION as follows:

majorversion="7"
minorversion="0"
major="7"
minor="0"
micro="1"
productversion="7.0.1"
buildphase="GM"
buildnumber="42218"
smallfixnumber="5"
nano="5"
base="42218"
packing="GLKfmp"
packing_id="3"
derived="GLKfmp"
derived_id="3"
builddate="2022/06/21"
buildtime="10:09:35"

Change the version to the same as the pat file.

6. Fresh the browser and upload the pat file again, then the installation will success.
7. Remove the broken packages in /var/packages path. Just rm -rf and then reinstall them.

Tips: I modify the ffmpeg of dsvideo via curl https://raw.githubusercontent.com/AlexPresso/VideoStation-FFMPEG-Patcher/main/patcher.sh | bash so that it will support DTS codec. And the dsvideo can convert hevc thanks to the "Advanced Media Extensions" in dsm-7.0.1.
Now my dsm version is 7.0.1 and everything works well now :).

[luyvlei]

The new update6 of dsm7.0.1 also need to register for the "Advanced Media Extensions".

My solution to downgrade version is disconnecting the wan of router then fore-reinstall the dsm via arpl. Then upload the 7.0.1-42218 pat file, the version of dsm will be 7.0.1-42218-update3. It seems that the dsm will auto download and install the small-fix version in the process of installation.

[exeron21]

if i am using emby or jellyfin instead of dsvideo, should i stay at 7.0.1-42218 for "Advanced Media Extensions"?

The new update6 of dsm7.0.1 also need to register for the "Advanced Media Extensions".

My solution to downgrade version is disconnecting the wan of router then fore-reinstall the dsm via arpl. Then upload the 7.0.1-42218 pat file, the version of dsm will be 7.0.1-42218-update3. It seems that the dsm will auto download and install the small-fix version in the process of installation.

[luyvlei]

There's no need because emby/jellyfin has it's own ffmpeg which doesn't rely on the AME. git4u ***@***.***>于2023年5月17日 周三15:54写道：

…

if i am using emby or jellyfin instead of dsvideo, should i stay at 7.0.1-42218 for "Advanced Media Extensions"? The new update6 of dsm7.0.1 also need to register for the "Advanced Media Extensions". My solution to downgrade version is disconnecting the wan of router then fore-reinstall the dsm via arpl. Then upload the 7.0.1-42218 pat file, the version of dsm will be 7.0.1-42218-update3. It seems that the dsm will auto download and install the small-fix version in the process of installation. — Reply to this email directly, view it on GitHub <#437 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AOSXXPDRTXABEOC4XPDS4LLXGR72BANCNFSM6AAAAAATA7SX5I> . You are receiving this because you modified the open/close state.Message ID: ***@***.***>