@Dingo :-
Now; you're in luck. Since you asked me about this a while back, I decided to do something about it.
My previous solution - that of running certain items from a newer Puppy running in a 'chroot' - doesn't suit everyone, especially where resources are limited. So; I've done the same as I've performed in a few of my other Pups.....I've taken the base Puppy SFS, and upgraded just the glibc to a newer version. Nothing else has been touched, so everything else will work exactly as it did before.
I've gone with glibc 2.28 for this, so slightly newer than Bionicpup64's version. I think I grabbed this from josejp2424's build of Busterpup64, a couple of years back. At any rate, I now have Brave running natively in Xenialpup64.
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If you want to try this, I've uploaded it to MediaFire. You can find it here:-
https://www.mediafire.com/file/wg1r28ww ... 5.sfs/file
All you need to do is to swap this SFS for the existing one. Then, re-boot. That's all there is to it.
Keep your old one somewhere safe, until you know this works OK. Let me know if it does what you want; you should now be able to run the current version of Brave-portable..!
Any issues, let me know, please.
Mike.