Ali3606 8m Geant Gn2500 8m 2tuner: V1.07 20120717.16

This confirms the device has two satellite tuners inside. A 2Tuner setup allows:

However, note the limitation: With only 1 MB of RAM, the PiP function will be slow, and recording requires an external USB chipset, which not all GN2500 units have. ALI3606 8M Geant GN2500 8M 2Tuner V1.07 20120717.16

Based on user reports from 2012–2014, this specific build had several quirks: This confirms the device has two satellite tuners inside

Deliverable: Add Dual-Tuner PVR with simultaneous recording of two channels, live timeshift, and optional streaming over LAN (DLNA or simple HTTP TS) integrated into existing firmware. However, note the limitation: With only 1 MB