# WP76xx kernel image update **URL:** \ **Category:** WP Series\ **Tags:** fw-upgrade\ **Created:** [August 26, 2021, 6:20am UTC](https://forum.sierrawireless.com/t/wp76xx-kernel-image-update/24689 "2021-08-26T06:20:38Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![raghavankanagaraj](https://avatars.discourse-cdn.com/v4/letter/r/d78d45/32.png) [@raghavankanagaraj](https://forum.sierrawireless.com/u/raghavankanagaraj)\ **Post date:** [August 26, 2021, 6:20am UTC](https://forum.sierrawireless.com/t/wp76xx-kernel-image-update/24689/1 "2021-08-26T06:20:38Z")
Hi Jyijyi, I have compiled the Linux kernel by following command: 1. bitbake linux-quic -c menuconfig -f 2. bitbake linux-quic -c compile -f How can i update kernel image in into target board?. Should i run “bitbake mdm9x28-image-minimal” and create “yocto\_wp76xx.4k.cwe” image and update into target? Thanks, Raghavan K. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [August 26, 2021, 6:36am UTC](https://forum.sierrawireless.com/t/wp76xx-kernel-image-update/24689/2 "2021-08-26T06:36:15Z")
normally i will type “make” to update the whole image "“yocto\_wp76xx.4k.cwe” ---
**Author:** ![raghavankanagaraj](https://avatars.discourse-cdn.com/v4/letter/r/d78d45/32.png) [@raghavankanagaraj](https://forum.sierrawireless.com/u/raghavankanagaraj)\ **Post date:** [August 26, 2021, 7:00am UTC](https://forum.sierrawireless.com/t/wp76xx-kernel-image-update/24689/3 "2021-08-26T07:00:01Z")
Hi Jyijyi, I am getting following error. Where should i run make command. After yocto source code download, i have compiled the yocto by make command first time. Second time make command is not working. Only bitbake option is there. raghavan@raghavan-HP-350-G2:~/wp76xx\_r16/yocto$ make Makefile:8: \*\*\* “Detected Makefile being re-invoked from within bitbake environment!”. Stop. raghavan@raghavan-HP-350-G2:~/wp76xx\_r16/yocto$ ls build\_bin kernel lk Makefile meta-gplv2 meta-openembedded meta-swi meta-swi-extras poky raghavan@raghavan-HP-350-G2:~/wp76xx\_r16/yocto$ Thanks, Raghavan. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [August 26, 2021, 7:02am UTC](https://forum.sierrawireless.com/t/wp76xx-kernel-image-update/24689/4 "2021-08-26T07:02:05Z")
then please do not do this " bitbake linux-quic -c compile -f" after first “make” ---
**Author:** ![raghavankanagaraj](https://avatars.discourse-cdn.com/v4/letter/r/d78d45/32.png) [@raghavankanagaraj](https://forum.sierrawireless.com/u/raghavankanagaraj)\ **Post date:** [August 26, 2021, 7:12am UTC](https://forum.sierrawireless.com/t/wp76xx-kernel-image-update/24689/5 "2021-08-26T07:12:24Z")
Hi Jyijyi, The top-level make command will run for 3 hours. We are in project development phase. I need to change kernel source code often, recompile it and load into target board and test it. ``` How can do this kernel modification and testing?. ``` Thanks, Raghavan. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [August 26, 2021, 7:14am UTC](https://forum.sierrawireless.com/t/wp76xx-kernel-image-update/24689/6 "2021-08-26T07:14:08Z")
the second time of “make” is very fast I can finish this within 5-10 minutes ---
**Author:** ![raghavankanagaraj](https://avatars.discourse-cdn.com/v4/letter/r/d78d45/32.png) [@raghavankanagaraj](https://forum.sierrawireless.com/u/raghavankanagaraj)\ **Post date:** [August 26, 2021, 7:26am UTC](https://forum.sierrawireless.com/t/wp76xx-kernel-image-update/24689/7 "2021-08-26T07:26:24Z")
Hi Jyijyi, I will try second time make before running any bitbake commands. What is the recommended ubuntu version for Release 16 compilation?. I am using Ubuntu 14.04. I am getting following Warning messages during kernel compilation: WARNING: Host distribution “ubuntu-14.04” has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution. Thanks, Raghavan. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [August 26, 2021, 7:28am UTC](https://forum.sierrawireless.com/t/wp76xx-kernel-image-update/24689/8 "2021-08-26T07:28:53Z")
I used Ubuntu 14 also.