AIO 3399C android 10 source SDK

Hello,

Has anyone able to download and compile Android 10 SDK for AIO 3399C?
I have downloaded the SDK but there are multiple files. I don’t know which file is the SDK?
Can anyone guide me through this?

I think this one is the SDK https://drive.google.com/drive/u/1/folders/1AcQvQP5q19h36qeL4yiDJfzhXu1tjhsj

Yes, but when I start downloading, it downloads multiple files with some weird extensions.

  1. Firefly-RK3399_Android10.0_git_20211222.7z-001.003
  2. Firefly-RK3399_Android10.0_git_20211222.7z-004.002
  3. Firefly-RK3399_Android10.0_git_20211222.7z-002.001
  4. Firefly-RK3399_Android10.0_git_20211222.7z-003.004
  5. Android10.0-20220913T070412Z-005.zip
  6. Android10.0-20220913T070412Z-006.zip

Now among these which one is the SDK. How do I identify the right one?

When I do this then it throws an error.
7z x ./Firefly-RK3399_Android10.0_git_20211222.7z-003.002 rk3399_Android10.0/

7-Zip [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21
p7zip Version 16.02 (locale=en_IN,Utf16=on,HugeFiles=on,64 bits,4 CPUs Intel(R) Core™ i5-5200U CPU @ 2.20GHz (306D4),ASM,AES-NI)

Scanning the drive for archives:
1 file, 4194304000 bytes (4000 MiB)

Extracting archive: ./Firefly-RK3399_Android10.0_git_20211222.7z-003.002
ERROR: ./Firefly-RK3399_Android10.0_git_20211222.7z-003.002
Can not open the file as archive

Can’t open as archive: 1
Files: 0
Size: 0
Compressed: 0

Pls refer to :https://wiki.t-firefly.com/en/ROC-RK3399-PC-Pro/compile_android10.0_firmware.html