1 files changed, 8 insertions, 3 deletions

diff --git a/libirecovery.c b/libirecovery.c
index aa676a0..b83a8d2 100644
--- a/libirecovery.c
+++ b/libirecovery.c
@@ -923,7 +923,12 @@ irecv_error_t irecv_send_buffer(irecv_client_t client, unsigned char* buffer, un
         if (recovery_mode) {
                 error = irecv_control_transfer(client, 0x41, 0, 0, 0, NULL, 0, USB_TIMEOUT);
         } else {
-                error = irecv_control_transfer(client, 0x21, 4, 0, 0, NULL, 0, USB_TIMEOUT);
+                char dump[4];
+                if (irecv_control_transfer(client, 0xa1, 5, 0, 0, dump, 1, USB_TIMEOUT) == 1) {
+                        error = IRECV_E_SUCCESS;
+                } else {
+                        error = IRECV_E_USB_UPLOAD;
+                }
         }
         if (error != IRECV_E_SUCCESS) {
                 return error;
@@ -1010,9 +1015,9 @@ irecv_error_t irecv_send_buffer(irecv_client_t client, unsigned char* buffer, un
         }
 
         if (dfuNotifyFinished && !recovery_mode) {
-                irecv_control_transfer(client, 0x21, 1, 0, 0, (unsigned char*) buffer, 0, USB_TIMEOUT);
+                irecv_control_transfer(client, 0x21, 1, packets, 0, (unsigned char*) buffer, 0, USB_TIMEOUT);
 
-                for (i = 0; i < 3; i++) {
+                for (i = 0; i < 2; i++) {
                         error = irecv_get_status(client, &status);
                         if (error != IRECV_E_SUCCESS) {
                                 return error;