Hello, the download link of OTA upgrade package of EP06ELAR04A04M4G upgraded to EP06ELAR03A08M4G and EP06ELAR03A08M4G rollback to EP06ELAR04A04M4G is shown below, and the test log of successful remote upgrade is provided. Please take it from yourself, I hope it will be helpful to you. thank you.
EP06ELAR03A08M4G-EP06ELAR04A04M4G.zip
EP06ELAR04A04M4G-EP06ELAR03A08M4G.zip
AT log.txt