Update BIOS Password
更新时间： 2026/08/06
在Gitcode上查看源码Update BIOS Password
Change History
| openUBMC Version | Revision Date | Description |
|---|---|---|
| 25.06 | 2025/06/26 | Initial draft: add command details |
Basic Information
Function Description
Update the BIOS password. (This command supports only in-band transmission.)
Privilege
Command Information
Request Information
| Byte | Data Field |
|---|---|
| NetFn | 30h |
| CMD | 92h |
| 1:3 | Manufacturer ID, LS Byte first. The length is fixed to three bytes. For example, if the vendor ID is 2011 and the corresponding hexadecimal value is 0x0007DB, the first byte is DBh, the second byte is 07h, and the third byte is 00h. |
| 4 | Sub command, sub command=47h |
| 5 | reserved |
| 6 | Parameter Selector 0x00: Obtain password-related parameters. 0x01: password change result |
| 7 | Password Type: specifies the password type. 0x00, supervisor setup password 0x01, user setup password |
| 8 | Parameter: error code when byte 6 is 1 (the password change result is returned) 0x00: success |
Response Information
| Byte | Data Field |
|---|---|
| 1 | Completion Code |
| 2:4 | Manufacturer ID, LS Byte first. The length is fixed to three bytes. For example, if the vendor ID is 2011 and the corresponding hexadecimal value is 0x0007DB, the first byte is DBh, the second byte is 07h, and the third byte is 00h. |
| 5:N | Password: This field exists when the value of Byte6 is 0 (obtaining password-related parameters). data5: Old Password Lenth a data6~(5+a): Old Password data(6+a): New Password Lenth b data(7+a)~(6+a+b): New Password |
Command Example
Update the BIOS password.
Request:
bash
ipmicmd -k "0f 00 MM NN" smi 0Response:
text
0f MM NN