Resilio Sync released an update last week and on Synology these package don't auto update. Time to manually update the packages again.

On my DS1515 (more RAM, more CPU) the manual update goes by fine (stop service, manual update, browse for file, upload, start service) but my DS216j, not so much.

Attempting to upload the file instantly fails with the useful error "Operation Failed".

I tried to re-download the file (was it corrupt)... Nop. Did I select the right architecture? Yep. Decided to give it a go via via the command line. Perhaps a reboot? Nop.

First, make sure SSH is enabled and you can SSH. Oh and pro tip: add your SSH key.

Something along these lines should get you started:

# Transfer the file to the NAS
scp *.spk NAS-IP:
# Connect to the device
ssh user@NAS-IP
# Install it as root using sudo. It'll ask for your psw
sudo synopkg install *.spk
[password]
# resiliosync_armada38x_DSM6_2.7.0.1366-1.spk install successfully
# All good? Then remove the installer
rm *.spk

Somehow this worked... 🤷‍♂️ Not sure what caused the error in the first place. I am guessing the device is a bit low on RAM.

The Resilio Sync package that's provided on a Synology NAS' Packager Center is out of date (2.6.2) and has a bug that causes big files to fail to sync (and that causes a loop of endless retries).

The solution is to manually update the package from 2.6.2 to 2.6.4. Find your NAS architecture and then download (bottom of the page) the right binary and manually install it.

Note that you need to stop the Resilio Sync service running (manually stop it via Package Center) before uploading the package and installing it.

Once done, don't forget to manually start the service again.

Resilio Sync GUI will be at <NAS IP>:28888/gui/.

The howto guide to manually update the package can be found here.