Pre-flight checks before updating to LMS 7.7.5 from 7.7.2 on QNAP TS-112P

Having been on good terms with LMS 7.7.2 running on a low-powered NAS - a QNAP TS-112P, which is ARM-based and (I read somewhere) old by today's standards, I'd like to ask the forum if there are any reasons I should NOT install 7.7.5 (LMS keeps prompting me to update). If it's good to go, should I now use 7.7.6?

I've also been trying to find out whether my NAS is capable of running versions of LMS later than 7.7.5/6, but without really knowing if it would benefit from it. Even if so, I'm a bit put off by reading about issues with things like plugin updates, requiring manual changes in Linux, which I'm not familiar with.

If anything should go wrong with the installation, can I easily revert to 7.7.2?

Thanks in advance for any advice. (I'm also going to post this in the QNAP LMS forum.)

Current system info:

NAS firmware is up-to-date, with QTS version 4.3.3.0299

SSOTS Release 4.14 Modified for LMS 7.7.2

Operating system: Linux - EN - utf8
Platform Architecture: armv5tel-linux
Perl Version: 5.10.0 - armv5tel-linux-thread-multi
Database Version: DBD::SQLite 1.34_01 (sqlite 3.7.7.1)
Total Players Recognized: 1 (Squeezebox Touch)

Primary plugins:
Custom Browse v2.15.676
Custom Clock Helper v2.11.94
Custom Scan v2.10.51
Multi Library (pop and classical local libraries)
Music Information Screen v4.4.11
Playlist Manager v6.1
TIDAL v1.2