COS AP upgrade image in u-boot mode

[Rps-Cheers]

Hi everyone, I want to learn upgrade image in u-boot mode，but i have some problem about this.Please help me,the problem as blow: 1\how to enter the u-boot mode? Whether we can hit the "ESC" when ap boot? 2\how to upgrade the image int u-boot mode? 3\how to delele the ap image in normal mode and u-boot mode? thanks a lot!

[Leo Laohoo]

u-boot is completely "locked down". You'll need to obtain an unlock code from TAC just to delete stuff.

[Rps-Cheers]

HI Leo

Thanks for your response!
As your meaning,we cannot enter to the u-boot mode,right? But,i have a issue that is,we can hit the "ESC" to interrupt the boot process,if we do this,what mode will we enter?

[Leo Laohoo]

Without TAC unlocking code (one-time-use only), you can easily get into u-boot, however, and limited to non-destructive commands.

[Rps-Cheers]

get it ,but how to get into the u-boot we can,by enter the ESC when ap boot process?

[Leo Laohoo · Accepted solution]

Correct, hit "ESC".

[Rps-Cheers]

OK.thanks for your help~