Not very sure what went wrong. The full log of OST LA will be more helpful than this error code. Also, you can consider using NOST tool instead. It is a modified and slightly improved version of OST 6.0.4.
I've transfered text messages from my LG to my laptop lots of times. You need LG Optimus to do it. It can be downloaded free from the LG website. Then use a USB cable to connect your mobile to your pc. Once its connected, from the tool click on messages. Then after all your texts have loaded you can copy them into your pc documents. Hope that helped :)
You can try MobiKin Assistant program, which can transfer sms from android computer.
Hi I have Nokia 7 Plus stuckbin bootloop and bootloader is locked.
I was on April 2020 security patch.
Then found some online service guy he downgrade to 8.1.0 firmware 213b something via online service tool 6.3.5 but phone is still bootloop.
Just wondering can we revive this phone?