You will find a detailed write up of the entire process at this link: I can confirm that, at least on my unit, the SPI NOR flash arrives empty. WARNING: I accept no liability for any outcome that results from any use of this information. This post is being made with the Pinebook Pro I own and used in the experiments. In summary, I used a Raspberry Pi (with monitor and USB keyboard), a USB flash drive, a test clip, a breadboard with jumper wire, and an external 3V3 power supply to perform in-circuit operations on the installed GD25Q127C SPI NOR flash ROM successfully. Although this should work on the PBP's cousins (ROCKPro64, ROCK64, PINE A64-LTS, PINE H64 vB, CUBE?), the process has only been thoroughly tested on the PBP. This approach uses additional hardware to probe, read, write, verify and erase the 128Mbit SPI NOR flash found on the Pinebook Pro.
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