The key was backporting the proprietary and sunxi input drivers from the KitKat kernel into the Marshmallow kernel tree. Part 3: The Porting War (The Technical Story) Here is the step-by-step of how the ROM was actually created for the TR10RS1: Step 1: Unlocking the Bootloader (No Fastboot) Allwinner devices don’t have Fastboot. Instead, they use FEL mode (USB boot). A developer created a tool called sunxi-fel on Linux. The command was:
# device/canaima/tr10rs1/device.mk $(call inherit-product, device/softwinner/polaris-common/device.mk) PRODUCT_NAME := lineage_tr10rs1 PRODUCT_DEVICE := tr10rs1 PRODUCT_MODEL := Canaima TR10RS1 PRODUCT_PROPERTY_OVERRIDES += ro.config.low_ram=true dalvik.vm.heapstartsize=5m dalvik.vm.heapgrowthlimit=48m Rom Android 6.0 Para Tablet Canaima Tr10rs1
The Android 6.0 ROM for the TR10RS1 is a miracle of reverse engineering—not perfect, but it proves that with enough Linux kernel hacking, even a government-locked educational tablet can taste Marshmallow. The key was backporting the proprietary and sunxi
In late 2016, a Chinese developer named on the 4PDA (Russian forum) and XDA-Developers managed to compile a kernel 3.4.67 from Allwinner’s leaked BSP (Board Support Package) and got Android 6.0.1 Marshmallow booting on the Polaris board. A developer created a tool called sunxi-fel on Linux