Ipad 2 IOS 9.3.5 - How to add a new root certificate to the trust store? Wikipedia inaccessible.

I have an ipad 2. the most recent update for the ipad 2 is ios 9.3.5 (as stated above). The only thing i use this ipad2 for is as an ereader, checking out books from librarys, using the overdrive app.

(the problem , interestingly, i digress "Lets encrypt" which is part of Internet Security Research Group (ISRG), which is a non profit company,, has stopped supporting devices with this older ios with certificates,,lets encrypt supplies overdrive, a private company now owned by KKR, and evil hedge fund,,,,,,,,WTF,,,how many people using ipad2's are now throwing them away, and i am not in the mood to spend more $$$'s on another crapple machine, , pardon digression, i am currently having to read books on the macbook pro with adobe digital editions,,,overdrive does not support any mac os newer then mojave... double WTF )

So i am trying to figure out how to get this old Ipad 2, to work, so i can use it to borrow library books again with the overdrive app,,,i am an old ignorant troglodyte,,,so please make full explanation, and very simple,,,and i will still probably reply with many questions...

(i digress, i called kkr, i called overdrive,,,,of course no response )

so the problem for me, i think, is the same as the person who started this thread, how to add a new root certificate to the overdrive app so it will access the public librarys catalogues that i use to borrow ebooks.

the troglodyte

janhans, and parapunter.....it effing worked,,it was so simple,,thanks so much,,why didnt overdrive or the certificate people tell me about this.....i have wasted so much time trying to figure this out..i am a stubborn old fool....now back in business...on the old ipad 2....

I'd like to try this on my iPad 3rd gen with 9.3.5. I tried going to the letsencrypt website, and it seemed to start to work, however when the Setting app opens up, it hangs for a bit, then crashes.

Will this Configurator app work on a personal iPad and not a "Managed" one?

Thanks! (or... any idea how to stop the Settings app from crashing?? My other idea is to re-install the iOS, but that seems like more trouble than it's worth, as there are apps on the iPad that I can no longer get if it gets wiped...)

Really? It looks like you can just go Settings/General/Profiles , select the certificate and choose "Delete Profile".

How do i get that file into my Mac, the file is loading down, but how can i get it to the right place so it will help my computer?

Thanks for your help, i can come to the system Roots, but after that Im bet ..... i just now try to load down Firefox, it might help!

Hi! Thanks, now I can load down my podcasters again!! To load down High Sierra made it!!!

but I had to take my phone to answer, Safari can’t open this site now, because it’s not safe it says!!!!

Thanks, all seems to function now!

Reboot the Mac into Safe Mode, attempt access to this site again, then reboot normally.

How to use safe mode on your Mac - Apple Support

What’s the history, here? If root certificates were somehow deleted (which wasn’t recommended in this thread), or were possibly mass-reloaded from another Mac running newer (and something wrong then happened) that can (potentially) cause access problems.