Yes, but it is and not officially supported. XGIMI uses an anti-rollback mechanism on some bootloaders. If you attempt to downgrade from V1.3.55 to V1.2.38, you might brick the device permanently.
typically receives firmware updates via Over-the-Air (OTA) notifications . If you see a "Details" reminder on your homepage, simply follow the prompts to download and restart. xgimi h2 global version firmware