As a general rule, as the others have pointed out, you can download the latest cume, and all the groups (including the latest TR) as one image catalog and then apply that. The system will automatically IPL as many times as needed to get the job done.
Some may argue that IBM may get confused by seeing PTF groups on your system for licensed programs you do not have applied. My reply is tough toenails. They can verify what you have installed via other means as you won't be the only ship in the sea who does it that way and they need to recognize that. Much like one shouldn't assume that everyone uses DSP01 for the system console or QCTL for their controlling subsystem.
TR3 is rather way behind. There was an issue when jumping from too many TRs. See this thing about 7.1:
https://www.linkedin.com/pulse/upgrading-ibm-i-71-when-youre-way-behind-ptfs-rob-berendt/
What that leaves out is that many of us have a program which we either runs automatically upon IPL, or we run manually, which customizes commands, etc which may get clobbered by release upgrades or by the method outlined in the article.
-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Joe Pluta
Sent: Tuesday, May 21, 2019 4:21 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Getting up to date on 7.3
It's been a while since I managed OS upgrades. We're at 7.3 TR3 (yeah, I know, but at least we're on 7.3!) and we'd like to get current. I still get confused with TRs, cumes and groups. The last I remember, the belt and suspenders approach was to apply all groups, IPL, then apply TR6, IPL, and finally apply the cume and IPL. I don't if this roadmap makes sense anymore, or if the roads even still exist. For all I know, there's a George Jetson jetcar that will take us from TR3 to TR6 magically, although I sort of doubt that.
Any advice from the experts here? Thanks in advance.
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