diff --git a/armsrc/Standalone/Makefile.hal b/armsrc/Standalone/Makefile.hal
index c9debeef8..737209e29 100644
--- a/armsrc/Standalone/Makefile.hal
+++ b/armsrc/Standalone/Makefile.hal
@@ -65,7 +65,8 @@ define KNOWN_STANDALONE_DEFINITIONS
 | HF_14ASNIFF     | 14a sniff to flashmem                  |
 | (RDV4 only)     |                                        |
 +----------------------------------------------------------+
-| HF_14BSNIFF     | 14b sniff                              |
+| HF_14BSNIFF     | 14b sniff to flashmem (rdv4) or ram    |
+|                 |                                        |
 +----------------------------------------------------------+
 | HF_15SNIFF      | 15693 sniff to flashmem (rdv4) or ram  |
 |                 |                                        |
diff --git a/armsrc/Standalone/hf_14bsniff.c b/armsrc/Standalone/hf_14bsniff.c
index 22a0c1ee8..d342afa93 100755
--- a/armsrc/Standalone/hf_14bsniff.c
+++ b/armsrc/Standalone/hf_14bsniff.c
@@ -12,6 +12,7 @@
  * - LED1: sniffing
  * - LED2: sniffed tag command, turns off when finished sniffing reader command
  * - LED3: sniffed reader command, turns off when finished sniffing tag command
+ * - LED4: unmounting/sync'ing flash (normally < 100ms)
  *
  * This module emits debug strings during normal operation -- so try it out in
  * the lab connected to PM3 client before taking it into the field.
@@ -27,25 +28,75 @@
 #include "proxmark3_arm.h"
 #include "iso14443b.h"
 #include "util.h"
+#include "spiffs.h"
 #include "appmain.h"
 #include "dbprint.h"
 #include "ticks.h"
 #include "BigBuf.h"
 
+#define HF_14BSNIFF_LOGFILE "hf_14bsniff.trace"
+
+static void DownloadTraceInstructions(void) {
+    Dbprintf("");
+    Dbprintf("To get the trace from flash and display it:");
+    Dbprintf("1. mem spiffs dump -s "HF_14BSNIFF_LOGFILE" -d hf_14bsniff.trace");
+    Dbprintf("2. trace load -f hf_14bsniff.trace");
+    Dbprintf("3. trace list -t 14b -1");
+}
+
 void ModInfo(void) {
     DbpString(" HF 14B SNIFF,  a ISO14443b sniffer");
+    DownloadTraceInstructions();
 }
 
 void RunMod(void) {
     StandAloneMode();
 
     Dbprintf(_YELLOW_("HF 14B SNIFF started"));
+#ifdef WITH_FLASH
+    rdv40_spiffs_lazy_mount();
+#endif
 
     SniffIso14443b();
 
     Dbprintf("Stopped sniffing");
     SpinDelay(200);
 
+    uint32_t trace_len = BigBuf_get_traceLen();
+#ifndef WITH_FLASH
+    // Keep stuff in BigBuf for USB/BT dumping
+    if (trace_len > 0)
+        Dbprintf("[!] Trace length (bytes) = %u", trace_len);
+#else
+    // Write stuff to spiffs logfile
+    if (trace_len > 0) {
+        Dbprintf("[!] Trace length (bytes) = %u", trace_len);
+
+        uint8_t *trace_buffer = BigBuf_get_addr();
+        if (!exists_in_spiffs(HF_14BSNIFF_LOGFILE)) {
+            rdv40_spiffs_write(
+                HF_14BSNIFF_LOGFILE, trace_buffer, trace_len, RDV40_SPIFFS_SAFETY_SAFE);
+            Dbprintf("[!] Wrote trace to "HF_14BSNIFF_LOGFILE);
+        } else {
+            rdv40_spiffs_append(
+                HF_14BSNIFF_LOGFILE, trace_buffer, trace_len, RDV40_SPIFFS_SAFETY_SAFE);
+            Dbprintf("[!] Appended trace to "HF_14BSNIFF_LOGFILE);
+        }
+    } else {
+        Dbprintf("[!] Trace buffer is empty, nothing to write!");
+    }
+
+    LED_D_ON();
+    rdv40_spiffs_lazy_unmount();
+    LED_D_OFF();
+
+    SpinErr(LED_A, 200, 5);
+    SpinDelay(100);
+#endif
+
     Dbprintf("-=[ exit ]=-");
     LEDsoff();
+#ifdef WITH_FLASH
+    DownloadTraceInstructions();
+#endif
 }