diff --git a/src/routes/files.ts b/src/routes/files.ts
index c1234a8..d7144ec 100644
--- a/src/routes/files.ts
+++ b/src/routes/files.ts
@@ -16,7 +16,7 @@ type RequestWithParams = Request & {
 
 const getTelegramFileInfo = async (telegramFileId: string, public_id: string) => {
   const cacheKey = `file_info_${telegramFileId}`;
-  let fileInfo = fileInfoCache.get(cacheKey);
+  let fileInfo = fileInfoCache.get(cacheKey) as any;
 
   if (!fileInfo) {
     fileInfo = await getFileInfo(telegramFileId);
@@ -26,7 +26,7 @@ const getTelegramFileInfo = async (telegramFileId: string, public_id: string) =>
     logger.debug('File info from cache', { public_id, cacheKey });
   }
 
-  return fileInfo;
+  return fileInfo as { file_size: number; mime_type: string; file_path: string; bot_token: string };
 };
 
 const buildTelegramFileUrl = (filePath: string, botToken: string): string =>
diff --git a/src/utils/telegram.ts b/src/utils/telegram.ts
index 6ed37ef..bea4d52 100644
--- a/src/utils/telegram.ts
+++ b/src/utils/telegram.ts
@@ -241,27 +241,35 @@ export const forwardMediaGroupToStorage = async (
 };
 
 export const getFileInfo = async (telegramFileId: string): Promise<TelegramFileInfo> => {
-  try {
-    const { result, botToken } = await executeWithBotRetry<FileInfoResult>(
-      async (activeBot, activeToken) => ({
-        result: await activeBot.telegram.getFile(telegramFileId),
-        botToken: activeToken,
-      }),
-    );
-
-    const fileData = result as unknown as TelegramFileInfo;
-    return {
-      file_size: fileData.file_size || 0,
-      mime_type: fileData.mime_type || 'application/octet-stream',
-      file_path: fileData.file_path || '',
-      bot_token: botToken,
-    };
-  } catch (error: unknown) {
-    logger.error('Failed to get file info', {
-      error: error instanceof Error ? error.message : String(error),
-    });
-    throw error;
+  let lastError: unknown;
+  for (const activeBot of bots) {
+    try {
+      const result = await activeBot.telegram.getFile(telegramFileId);
+      const fileData = result as unknown as Omit<TelegramFileInfo, 'bot_token'>;
+      return {
+        file_size: fileData.file_size || 0,
+        mime_type: fileData.mime_type || 'application/octet-stream',
+        file_path: fileData.file_path || '',
+        bot_token: activeBot.telegram.token,
+      };
+    } catch (error: unknown) {
+      lastError = error;
+      const errorStr = error instanceof Error ? error.message : String(error);
+      if (
+        errorStr.includes('wrong file_id') ||
+        errorStr.includes('file is temporarily unavailable') ||
+        errorStr.includes('retry after')
+      ) {
+        continue;
+      }
+      throw error;
+    }
   }
+
+  logger.error('Failed to get file info from any bot', {
+    error: lastError instanceof Error ? lastError.message : String(lastError),
+  });
+  throw lastError;
 };
 
 export const getBot = (): Telegraf => bots[nextBotIndex];
diff --git a/src/utils/zip.ts b/src/utils/zip.ts
index 73f662b..6791972 100644
--- a/src/utils/zip.ts
+++ b/src/utils/zip.ts
@@ -1,4 +1,6 @@
+import { once } from 'node:events';
 import { createReadStream, createWriteStream } from 'node:fs';
+import { finished } from 'node:stream/promises';
 import { open, stat } from 'node:fs/promises';
 import { basename } from 'node:path';
 import { nanoid } from 'nanoid';
@@ -65,18 +67,13 @@ const writeChunk = async (
   chunk: Buffer,
 ): Promise<void> => {
   if (!writer.write(chunk)) {
-    await new Promise<void>((resolve, reject) => {
-      writer.once('drain', resolve);
-      writer.once('error', reject);
-    });
+    await once(writer, 'drain');
   }
 };
 
 const finishWriter = async (writer: ReturnType<typeof createWriteStream>): Promise<void> => {
-  await new Promise<void>((resolve, reject) => {
-    writer.end(() => resolve());
-    writer.once('error', reject);
-  });
+  writer.end();
+  await finished(writer);
 };
 
 export const sanitizeZipEntryName = (fileName: string, usedNames = new Set<string>()): string => {
@@ -102,16 +99,10 @@ export const sanitizeZipEntryName = (fileName: string, usedNames = new Set<strin
 
 const calculateFileCrc32 = async (tempPath: string): Promise<number> => {
   let crc = 0xffffffff;
-
-  await new Promise<void>((resolve, reject) => {
-    const reader = createReadStream(tempPath);
-    reader.on('data', (chunk: Buffer) => {
-      crc = updateCrc32(crc, chunk);
-    });
-    reader.once('end', resolve);
-    reader.once('error', reject);
-  });
-
+  const reader = createReadStream(tempPath);
+  for await (const chunk of reader) {
+    crc = updateCrc32(crc, chunk as Buffer);
+  }
   return (crc ^ 0xffffffff) >>> 0;
 };
 
@@ -154,14 +145,10 @@ export const createZip = async (files: ZipInputFile[]): Promise<CreatedZip> => {
       ]);
 
       await writeHashed(localHeader);
-      await new Promise<void>((resolve, reject) => {
-        const reader = createReadStream(file.tempPath);
-        reader.on('data', (chunk: Buffer) => {
-          void writeHashed(chunk).catch(reject);
-        });
-        reader.once('end', resolve);
-        reader.once('error', reject);
-      });
+      const reader = createReadStream(file.tempPath);
+      for await (const chunk of reader) {
+        await writeHashed(chunk as Buffer);
+      }
 
       entries.push({
         fileName: file.fileName,