how do i downgrade from 9.02 to 8.25

Since i have problems with the tvheadend i want to downgrade from 9.02 to 8.25. When i go to manual updates - versions- there is no version to choose. I have made some backups on 8.25 but i think i have to downgrade to 8.25 first, right? Is it possible to downgrade with a 8.25 libreelec stick, without destoying all my settings? Or should i move first my backups to another drive?

Thanks in advance.

Regards

goofy

my problem is that i use a qnap nas 251+ and the newest linux kernel -firmware- seems to be incompatible to tvheadend. I have tried it with the new kernel but there was terrible stuttering in audio and drop outs in picture. So i had to downgrade the nas to a firmware that was compatible with an older version of TVHEADEND, to be exact 4.2.6.

Yesterday i performed the downgrade to 8.25 libreelec and i restored a backup. Now it seems to work, except the TV Series scraping with TVDB.

this is a part of the log - internet access is given !!!!:

Quote

19:33:01.747 T:139631771207424 DEBUG: scraper: CreateSearchUrl returned <url post="yes" cache="auth.json">https://api.thetvdb.com/login?{"apikey":"439DFEBA9D3059C6"}|Content-Type=application/json</url> 19:33:01.748 T:139631771207424 DEBUG: scraper: GetSearchResults returned <results><url function="GetSearchResultsAuth" cache="search-The%20Walking%20Dead-en.json">https://api.thetvdb.com/search/series?name=the%20walking%20dead|authorization=bearer%20&accept-language=en</url></results> 19:33:01.748 T:139631771207424 DEBUG: CurlFile::ParseAndCorrectUrl() adding custom header option 'Authorization: ***********' 19:33:01.748 T:139631771207424 DEBUG: CurlFile::ParseAndCorrectUrl() adding custom header option 'accept-language: en' 19:33:01.748 T:139631771207424 DEBUG: CurlFile::Open(0x7efe7c464070) https://api.thetvdb.com/search/series?name=the%20walking%20dead 19:33:02.030 T:139631771207424 ERROR: CCurlFile::FillBuffer - Failed: HTTP returned error 401 19:33:02.030 T:139631771207424 ERROR: CCurlFile::Open failed with code 401 for https://api.thetvdb.com/search/series?name=the%20walking%20dead|authorization=bearer%20&accept-language=en 19:33:02.030 T:139631771207424 ERROR: Run: Unable to parse web site 19:33:02.031 T:139631771207424 DEBUG: FindMovie: Searching for 'The Walking Dead' using The TVDB scraper (path: '/storage/.kodi/addons/metadata.tvdb.com', content: 'tvshows', version: '3.0.1') 19:33:02.031 T:139631771207424 DEBUG: scraper: CreateSearchUrl returned <url post="yes" cache="auth.json">https://api.thetvdb.com/login?{"apikey":"439DFEBA9D3059C6"}|Content-Type=application/json</url>

QNAP problem extracted from a another community:

Quote

virtualdj wrote: ↑Wed May 29, 2019 9:30 pm Guys, be careful to NOT update to QTS 4.4.1.0949 Build 20190528 beta because on most models it will upgrade the kernel to version 4.14.24 so this will stop the DVB USB devices from working.
I will update the QPKG with the new kernel modules when QNAP will release the updated GPLs with the kernel config (currently the latest file on SourceForge is GPL_QTS-4.4.0-20181205_Kernel.tar and does NOT include the sources for 4.14.24) and compatibly with my spare time.

My TS-453mini is also near the end of life support from QNAP (they state June 2019) so I'm not sure for how long I can test the x86_64 QPKG myself. At the moment they didn't specify the last QTS version for my model.

TL;DR
DO NOT UPGRADE QTS if you need TVHeadend recording with DVB USB tuners."

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... no tvheadend is working flawlessly in libreelec 8.25. But tvdb isn´t working on my system. Now i work with xem as scraper.