Unisoc T603 stock firmware

7 devices in our catalog built on the Unisoc T603 chipset — 108 files in total, every one a free direct download. Because they share the same Unisoc SoC, they all flash the same way: with the Unisoc SPD Upgrade Tool (ResearchDownload). See the Unisoc SPD flashing guide for the full steps.

Grouped from each device's verified chipset. A device is listed only when its chipset was confirmed — not guessed.

iTel phones on Unisoc T603 (5)

itel A50
A667LP
1 ROM
itel A50
A667L
3 ROMs
itel A50C
A669L
5 ROMs
itel A70
A665L
6 ROMs
itel A80
A671LC
1 ROM

Philips phones on Unisoc T603 (1)

Philips S6211
S6211
1 ROM

Redmi phones on Unisoc T603 (1)

Redmi A3x
klein
91 ROMs

Flashing a Unisoc T603 device

Every phone on this page uses the Unisoc Unisoc T603, so the flashing procedure is the same across all of them — only the firmware file differs per model. Download the build for your exact model code, then follow the Unisoc SPD flashing guide. Flashing another model's firmware, even on the same chipset, can brick the device — always match the exact model code.

Also pick the build made for your region. Browse firmware by country or by Android version to narrow it down.