# Configure OS without CLI **URL:** \ **Category:** Product support\ **Tags:** balena-cli\ **Created:** [February 2, 2021, 9:20am UTC](https://forums.balena.io/t/configure-os-without-cli/247270 "2021-02-02T09:20:32Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![pcorbel](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/pcorbel/32/4801_2.png) [@pcorbel](https://forums.balena.io/u/pcorbel)\ **Post date:** [February 2, 2021, 9:20am UTC](https://forums.balena.io/t/configure-os-without-cli/247270/1 "2021-02-02T09:20:32Z")
Hello there, 👋 I am currently setting up a project where I want to generate BalenaOS .img files dynamically server-side and then serve them to user 👌 To achieve this, I am invoking the CLI `balena login` then `balena os configure my-custom.img` then `zip my-custom.img.zip my-custom.img` finally serve my-custom.img.zip However, the process take a lot of time 🐌 and since he whole process “only add the config.json in the .img disk file” I was wondering if it was possible (I have a preference for Python) to add it via the SDK or another tool either directly in the .img file on even better in the zipped .img file. Thanks a lot for your experience sharing 🤝 ---
**Author:** ![mpous](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/mpous/32/4742_2.png) [@mpous](https://forums.balena.io/u/mpous)\ **Post date:** [February 2, 2021, 1:01pm UTC](https://forums.balena.io/t/configure-os-without-cli/247270/7 "2021-02-02T13:01:06Z")
Thank you for your message. Actually this is what balenaCloud does. However you can find the logics how to do it on etcher-sdk. You can download and configure a balenaOS image from s3 with this here [etcher-sdk/balena-s3-configure.ts at master · balena-io-modules/etcher-sdk · GitHub](https://github.com/balena-io-modules/etcher-sdk/blob/master/examples/balena-s3-configure.ts) Clone the repo, run `npm i` then run `./node_modules/.bin/ts-node examples/balena-s3-configure.ts` Let us know if you succeed.