[SRU] synaptics-prometheus: Force the minor version from 0x02 to 0x01. fwupd

I built a testing package with this commit on my PPA:

https://launchpad.net/~xueshengyao/+archive/ubuntu/fwupd/+packages

comment from the author(Vincent Huang) of this commit:

the patch is to help the users who have already updated 0x02 firmware, otherwise, they will no longer be able to update firmware via LVFS.

Tested the new package on my PPA on a Lenovo ThinkPad X1 Yoga Gen 5, which have a Synaptics fingerprint device(), it works fine:

$ dpkg -l|grep fwupd
ii fwupd 1.3.9-4sutton1 amd64 Firmware update daemon
ii libfwupd2:amd64 1.3.9-4sutton1 amd64 Firmware update daemon library
ii libfwupdplugin1:amd64 1.3.9-4sutton1 amd64 Firmware update daemon plugin library

Download the firmware(xxx.cab) from https://fwupd.org/lvfs/devices/com.synaptics.prometheus.firmware

$ sudo fwupdmgr install 5e92f5765cea1313ad0b8397ccc258b8ea5139b650b53a52c65256eea74d78f3-Synaptics-Prometheus-10.01.3158804.cab
Decompressing… [***************************************]
Authenticating… [***************************************]
Installing on Prometheus…[ - ]
Restarting device… [***************************************]
Successfully installed firmware

Because the update of this package is just a trick and minor change, just force the 10.02.XXX firmware be treated as 10.01.XXX version, so it is not very easy to test this update, but I listed the details step below:

1. Find a machine have this type of Fingerpirnt reader. (Synaptics 06cb:00bd)
2. Install Ubuntu 20.04
3. Check the Fingerprint's firmware version:
$ sudo fwupdmgr get-devices | grep Fingerprint -A 8
Then we can see the "Current version" is 10.02.XXX, in my case the it is 10.02.3110269

NB. If you computer is not 10.02.XXX, you need manually updated to 10.02.XXX version to test this package.

4. $ sudo fwupdmrg enable-remote lvfs-testing
5. sudo fwupdmgr update
...
Prometheus has no available firmware updates.

So, we can see with the stock fwupd, we cannot update this firmware now.

6. Update the fwupd to my PPA's version
$ sudo apt-add-repository ppa:xueshengyao/fwupd
$ sudo apt install fwupd libfwupd2 libfwupdplugin1

7. With this new package, and run this command in step 5 again, we will get:

$ fwupdmgr update
• Thunderbolt Controller has no available firmware updates
Upgrade available for Prometheus from 10.01.3110269 to 10.01.3158804
Prometheus and all connected devices may not be usable while updating. Continue with update? [Y|n]: Y
Downloading 10.01.3158804 for Prometheus...
Fetching firmware https://fwupd.org/downloads/5e92f5765cea1313ad0b8397ccc258b8ea5139b650b53a52c65256eea74d78f3-Synaptics-Prometheus-10.01.3158804.cab
Downloading… [***************************************] Less than one minute remaining…
Decompressing… [***************************************]
Authenticating… [***************************************]
Updating Prometheus… [ - ]
Restarting device… [***************************************]
Successfully installed firmware

 So, the 10.02.3110269 was treated as 10.01.3110269 in this updated package, the user can update firmware according the Vendor's update policy.

8. We can confirm this by run fwupdmgr get-devices again:
$ fwupdmgr get-devices

Devices that have been updated successfully:

 • Prometheus (10.01.3110269 → 10.01.3158804)

@Brian and Shengyao,

Mario request a version upgrade to 1.3.10 pint release SRU based on

   https://wiki.ubuntu.com/firmware-updates

Per my check, 1.3.10 also include the patch needed in this bug.
Shall we just go SRU 1.3.10 in LP: #1883568 ?

This fix is included with the version of the package in groovy, so I'm setting this bug to Fix Released and bug 1883568 will be used for tracking an SRU of fwupd which will include this fix.

@YC and Brian, Thanks for the help, the we will use the bug #1883568 to track this issue.