No way back to Volla OS

[Linix]

Installing UT on an Volla Phone worked fine with the UBports linux installer 0.8.8. But there is no way back to Volla OS or to Sailfish.
Error message (Volla):
core:download: Error: core:download Error: Error: Download Error: https://ota.volla.tech/builds/volla-9.0-20201019-nightly-k63v2_64_bsp-signed.zip
Error [ERR_TLS_CERT_ALTNAME_INVALID]: Hostname/IP does not match certificate's altnames: Host: ota.volla.tech. is not in the cert's altnames: DNS:volla.tech

Error message (Sailfish):
Error: core:download: Error: core:download Error: Error: Download Error: https://gitlab.com/sailfishos-porters-ci/yggdrasil-ci/-/jobs/artifacts/master/download?job=run-build-lvm Error: ENOENT: no such file or directory, open 'C:\Users\ich-del\AppData\Roaming\ubports\yggdrasil\SailfishOS\download?job=run-build-lvm'
ignore - internetconnection lost
Error: core:unpack: Error: Exited with code 7

[AppLee]

Hi and welcome @linix

From the error message, I'd say that the certificate from those sites expired.
Have you tried to manually download them ?

[Linix]

@applee
Hi applee,
doesn´t work:
warning security risk - foreward - password needed

;-(

[AppLee]

@linix
I don't know much about installing Android ROMs, I only used the installer the one time to get UT on my N5.

But if you know how to do it, you can try to find the ROM for Volla OS and install it using the appropriate tools (TWRP, ADB, Flashboot or whatever - I'm really not a "flasher")
Don't take this as an advice, but just if you know enough your stuff.

Else, I'm sure someone will come here and help.
Or you can try on Telegram...

[Linix]

@applee

Funny, it was my first attempt to flash lineage 18 with the tools you mentioned, but i failed. So I was glad that it worked with the UBport installer to get a working UT.

I hope they will renew the certificate or I will wait until the version 0.9.

[Lakotaubp]

@linix You could try asking here https://t.me/vollaphonefan

[Linix]

Today it worked. I am back to Volla. I did the same, but less error messages, the links worked.

[Lakotaubp]

@linix Please mark as solved using the cog wheel ( top right) on your original post. Then ask as question, mark as solved. It will aid others. Thanks, and well done on sticking with it.