diff --git a/CanUds.c b/CanUds.c
index f19cd16..cbcbc2e 100644
--- a/CanUds.c
+++ b/CanUds.c
@@ -1547,7 +1547,7 @@ static uint16_t RequestDownload_34(tCanUds *env) {
     requestDownload_Response->ServiceId = UDS_RequestDownload | 0b1000000;
     requestDownload_Response->lengthFormatIdentifier = 0x20; // 2 байта - длина поля maxNumberOfBlockLength
 
-    uint8_t countBlock = 31;//31;
+    uint8_t countBlock = 16;//31;
     requestDownload_Response->maxNumberOfBlockLength = countBlock * 128 + 2;