Ji Luo developed a security-critical feature for the flipperdevices/u-boot repository, focusing on trusted random number generation for i.MX95 platforms. He implemented initialization of the ELE RNG context prior to OP-TEE startup, ensuring that a secure RNG source is available early in the boot process. This approach enables OP-TEE to derive cryptographic randomness securely, reducing risk in the secure boot path and supporting future enhancements. Ji applied his expertise in C programming, embedded systems, and system initialization to integrate and validate these changes, demonstrating a deep understanding of secure boot flows and hardware-software interaction in embedded environments.