diff --git a/src/renderer/services/bs-downloader.service.ts b/src/renderer/services/bs-downloader.service.ts
new file mode 100644
index 00000000..bd4664a0
--- /dev/null
+++ b/src/renderer/services/bs-downloader.service.ts
@@ -0,0 +1,37 @@
+import { DownloadInfo } from '../../main/ipcs/bs-download-ipcs';
+import { BSVersion } from '../../main/services/bs-version-manager.service'
+import { ModalExitCode, ModalService, ModalType } from './modale.service';
+
+export class BsDownloaderService{
+
+    private static instance: BsDownloaderService;
+
+    private readonly modalService: ModalService = ModalService.getInsance();
+
+    private constructor(){
+        window.electron.ipcRenderer.on('bs-download.not-connected', async (bsVersion: BSVersion) => {
+            const res = await this.modalService.openModal(ModalType.STEAM_LOGIN);
+            if(res.exitCode !== ModalExitCode.COMPLETED){ return; }
+            window.electron.ipcRenderer.sendMessage('bs-download.start', {bsVersion: bsVersion, username: res.data.username, password: res.data.password, stay: res.data.stay} as DownloadInfo)
+        });
+    }
+
+    public static getInstance(){
+        if(!BsDownloaderService.instance){ BsDownloaderService.instance = new BsDownloaderService(); }
+        return BsDownloaderService.instance;
+    }
+
+    public async download(bsVersion: BSVersion){
+        let username = localStorage.getItem("username");
+        if(!username){
+            const res = await this.modalService.openModal(ModalType.STEAM_LOGIN);
+            if(res.exitCode !== ModalExitCode.COMPLETED){ return; }
+            if(res.data.stay){ localStorage.setItem("username", res.data.username); }
+            window.electron.ipcRenderer.sendMessage('bs-download.start', {bsVersion: bsVersion, username: res.data.username, password: res.data.password, stay: res.data.stay} as DownloadInfo);
+        }
+        else{
+            window.electron.ipcRenderer.sendMessage('bs-download.start', {bsVersion: bsVersion, username: username} as DownloadInfo);
+        }
+    }
+
+}
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