Could this pakcage provide incremental update?

[msoxzw]

Current adobe reader update is based on DC base version, i.e. 15.007.20033, so the size of this update is unnecessarily large, about 132MB. At location where network speed is limited, chocolatey often fails to update adobe reader.

However, adobe provides incremental update package. Please compare the following two links:
Full update
Incremental update

Obviously, incremental update is only 2.2 MB, which is much smaller than full update.
Hence, is it possible to provide incremental update? although incremental update also requires that the installer is also the latest version, currently, 19.021.20047.

[msoxzw]

Furthermore, if incremental update is infeasible, could be the installer changed to base installer? Because full update applies to the base installer as well, and base installer is also considerably smaller than the latest installer.

The following two links give you the comparison:
Latest installer (275MB)
Base installer (147MB)

Therefore, the size of latest installer is approximately the sum of base installer and full update.

[sbaerlocher]

Thank you for your input.

As a matter of fact I haven't thought about the fact that a download is not possible at limited network speed.

Your suggestion is that the packager should first check if the adobe reader is installed and if it is installed only the incremental update should load. However I would have to work out a solution if the adobe reader is installed but not on the 2 newest update.

• Can you tell me where to find the list of incremental updates?
• Is there an incremental update for each version?

[msoxzw]

Actually, there is no list of incremental updates, but every full update has corresponding incremental update. The URL of every incremental update is faithfully based on the URL of full update, which modify MUI.msp to MUI_incr.msp.

The following table partly from release note indicates that each continuous release provides full installer

Date	Release Notes	Release Type	Installer
Oct 17, 2019	DC Oct 2019 (19.021.20048)	OOC	None
Oct 15, 2019	DC Oct 2019 (19.021.20047)	Continuous	Installer
Aug 22, 2019	DC Aug 2019 (19.012.20040)	Optional Update	None
Aug 13, 2019	DC Aug 2019 (19.012.20036)	Continuous	Installer
Jun 13, 2019	DC Jun 2019 (19.012.20035)	Optional Update	None
May 14, 2019	DC May 2019 (19.012.20034)	Continuous	Installer

And, incremental update will install over the last full installer, i.e. continuous release:
Incremental update 19.021.20048 applies to 19.021.20047
Incremental update 19.021.20047 applies to 19.012.20040 and 19.012.20036
Incremental update 19.012.20040 applies to 19.012.20036
Incremental update 19.012.20036 applies to 19.012.20035 and 1901220034
Incremental update 19.012.20035 applies to 19.012.20034
Incremental update 19.012.20034 applies to 19.010.20099

Last but not least, it does not matter that chocolatey fails to update adobe reader. What matters is that chocolatey will remove this corrupt package if update is accidentally interrupted because the user starts to lose patience due to excessively slow download speed.

[sbaerlocher]

I let it go through my head and it could be realized, unfortunately I don't have enough Recurrens at the moment to realize it, you can do a PR.