Samsung has accepted its fault and providing free motherboard replacement or repair
My A50s had auto restart issue after updates, service center asked for motherboard change.
Step1: Mail on Samsung CEO DESK, write that, the update has damaged your phone and you want free repair
2. The next day you will receive call from them, tell them the same, they will ask you to submit phone at nearest service center
3. Visit service center and tell them to submit phone and the service head has insisted you to do that and show them the mail received form service head.
Take job sheet from them
4. Follow service head's calls and instructions precisely
The whole process will take 15 days and you will get the phone repaired free of cost
