公开(公告)号：US20230418591A1

公开(公告)日：2023-12-28

申请号：US18085084

申请日：2022-12-20

申请人： HYUNDAI AUTOEVER CORP.

发明人： JaeHyun Lim ,  YoungJin Yun ,  YongSeong Jeon

IPC分类号： G06F8/654 ,  G06F9/4401

CPC分类号： G06F8/654 ,  G06F9/4401

摘要： A method of updating firmware by a flash bootloader includes: storing current version information included in a trailer block of firmware stored in a flash memory, the firmware including the trailer block and a header block; erasing a sector in which the header block is located while maintaining a sector in which the trailer block is located in the flash memory; writing a header block of a new firmware to be downloaded in the flash memory; determining, by comparing current version information of the new firmware in the written header block and the stored current version information, whether the firmware is to be downgraded; and, in response to determining that the firmware is not to be downgraded, erasing a sector in which the trailer block is located from the flash memory, and writing a trailer block of the new firmware in the flash memory.