as FP5 is for EU yet, try contactsupport with question about OTA avaiability for Non-EU SIM’s
alternatively you can install latest full rom from november when unlock bootloader:
but for FP5 is only fastboot methot which wipe all data…
BTW: in above link is at this time zip for previous month (v106), for latest(v112) look here
if this problem be longtime… maybe create thread where users can publish(i can if remember) monthly OTA “diff/patch” (official!) links, with it can be maybe doing montly offline/sideload update without data lost… similar as regular OTA online update (is same zip file ofcourse) this links can be simply grabed with “LogCat Reader” (app on phone) or “adb logcat” (on PC with usb cable) when OTA is found and downloaded on Phone…
As example this is v112 for installed v106 …
In general this always need have on phone previous system version, not possible install this small update with skipping, is differential update to previous version…
BTW: before some year i’m doing this in XDA thread with Nokia 7 Plus, as some users in some countries not have OTA notify, but with link i (or others) grab can be possible sideload without data lost, of course not sure if this work on FP5…