diff --git a/user/ansi_parser.c b/user/ansi_parser.c
index 7b01ded..d23cca6 100644
--- a/user/ansi_parser.c
+++ b/user/ansi_parser.c
@@ -44,6 +44,7 @@ static volatile bool inside_string = false;
 
 // public
 volatile u32 ansi_parser_char_cnt = 0;
+volatile bool ansi_parser_inhibit = 0;
 
 void ICACHE_FLASH_ATTR
 ansi_parser_reset(void) {
@@ -108,18 +109,20 @@ ansi_parser(char newchar)
 	static char string_buffer[ANSI_STR_LEN];
 	static int  str_ni;
 
+	if (ansi_parser_inhibit) return;
+
 	// This is used to detect timeout delay (time since last rx char)
 	ansi_parser_char_cnt++;
 
 	// Init Ragel on the first run
 	if (cs == -1) {
 		
-/* #line 118 "user/ansi_parser.c" */
+/* #line 121 "user/ansi_parser.c" */
 	{
 	cs = ansi_start;
 	}
 
-/* #line 92 "user/ansi_parser.rl" */
+/* #line 95 "user/ansi_parser.rl" */
 
 		#if DEBUG_ANSI
 			memset(history, 0, sizeof(history));
@@ -199,7 +202,7 @@ ansi_parser(char newchar)
 
 	// The parser
 	
-/* #line 203 "user/ansi_parser.c" */
+/* #line 206 "user/ansi_parser.c" */
 	{
 	const char *_acts;
 	unsigned int _nacts;
@@ -389,7 +392,7 @@ execFuncs:
 	while ( _nacts-- > 0 ) {
 		switch ( *_acts++ ) {
 	case 0:
-/* #line 179 "user/ansi_parser.rl" */
+/* #line 182 "user/ansi_parser.rl" */
 	{
 			ansi_warn("Parser error.");
 			apars_show_context();
@@ -398,7 +401,7 @@ execFuncs:
 		}
 	break;
 	case 1:
-/* #line 188 "user/ansi_parser.rl" */
+/* #line 191 "user/ansi_parser.rl" */
 	{
 			if ((*p) != 0) {
 				apars_handle_plainchar((*p));
@@ -406,7 +409,7 @@ execFuncs:
 		}
 	break;
 	case 2:
-/* #line 196 "user/ansi_parser.rl" */
+/* #line 199 "user/ansi_parser.rl" */
 	{
 			// Reset the CSI builder
 			leadchar = NUL;
@@ -423,13 +426,13 @@ execFuncs:
 		}
 	break;
 	case 3:
-/* #line 211 "user/ansi_parser.rl" */
+/* #line 214 "user/ansi_parser.rl" */
 	{
 			leadchar = (*p);
 		}
 	break;
 	case 4:
-/* #line 215 "user/ansi_parser.rl" */
+/* #line 218 "user/ansi_parser.rl" */
 	{
 			if (arg_cnt == 0) arg_cnt = 1;
 			// x10 + digit
@@ -439,7 +442,7 @@ execFuncs:
 		}
 	break;
 	case 5:
-/* #line 223 "user/ansi_parser.rl" */
+/* #line 226 "user/ansi_parser.rl" */
 	{
 			if (arg_cnt == 0) arg_cnt = 1; // handle case when first arg is empty
 			arg_cnt++;
@@ -447,20 +450,20 @@ execFuncs:
 		}
 	break;
 	case 6:
-/* #line 229 "user/ansi_parser.rl" */
+/* #line 232 "user/ansi_parser.rl" */
 	{
 			interchar = (*p);
 		}
 	break;
 	case 7:
-/* #line 233 "user/ansi_parser.rl" */
+/* #line 236 "user/ansi_parser.rl" */
 	{
 			apars_handle_csi(leadchar, arg, arg_cnt, interchar, (*p));
 			{cs = 1;goto _again;}
 		}
 	break;
 	case 8:
-/* #line 245 "user/ansi_parser.rl" */
+/* #line 248 "user/ansi_parser.rl" */
 	{
 			leadchar = (*p);
 			str_ni = 0;
@@ -470,13 +473,13 @@ execFuncs:
 		}
 	break;
 	case 9:
-/* #line 253 "user/ansi_parser.rl" */
+/* #line 256 "user/ansi_parser.rl" */
 	{
 			string_buffer[str_ni++] = (*p);
 		}
 	break;
 	case 10:
-/* #line 257 "user/ansi_parser.rl" */
+/* #line 260 "user/ansi_parser.rl" */
 	{
 			inside_string = false;
 			string_buffer[str_ni++] = '\0';
@@ -485,41 +488,41 @@ execFuncs:
 		}
 	break;
 	case 11:
-/* #line 270 "user/ansi_parser.rl" */
+/* #line 273 "user/ansi_parser.rl" */
 	{
 			apars_handle_hash_cmd((*p));
 			{cs = 1;goto _again;}
 		}
 	break;
 	case 12:
-/* #line 275 "user/ansi_parser.rl" */
+/* #line 278 "user/ansi_parser.rl" */
 	{
 			apars_handle_short_cmd((*p));
 			{cs = 1;goto _again;}
 		}
 	break;
 	case 13:
-/* #line 280 "user/ansi_parser.rl" */
+/* #line 283 "user/ansi_parser.rl" */
 	{
 			apars_handle_space_cmd((*p));
 			{cs = 1;goto _again;}
 		}
 	break;
 	case 14:
-/* #line 287 "user/ansi_parser.rl" */
+/* #line 290 "user/ansi_parser.rl" */
 	{
 			leadchar = (*p);
 			{cs = 10;goto _again;}
 		}
 	break;
 	case 15:
-/* #line 292 "user/ansi_parser.rl" */
+/* #line 295 "user/ansi_parser.rl" */
 	{
 			apars_handle_chs_designate(leadchar, (*p));
 			{cs = 1;goto _again;}
 		}
 	break;
-/* #line 523 "user/ansi_parser.c" */
+/* #line 526 "user/ansi_parser.c" */
 		}
 	}
 	goto _again;
@@ -537,7 +540,7 @@ _again:
 	while ( __nacts-- > 0 ) {
 		switch ( *__acts++ ) {
 	case 0:
-/* #line 179 "user/ansi_parser.rl" */
+/* #line 182 "user/ansi_parser.rl" */
 	{
 			ansi_warn("Parser error.");
 			apars_show_context();
@@ -547,7 +550,7 @@ _again:
 goto _again;}
 		}
 	break;
-/* #line 551 "user/ansi_parser.c" */
+/* #line 554 "user/ansi_parser.c" */
 		}
 	}
 	}
@@ -555,6 +558,6 @@ goto _again;}
 	_out: {}
 	}
 
-/* #line 315 "user/ansi_parser.rl" */
+/* #line 318 "user/ansi_parser.rl" */
 
 }
diff --git a/user/ansi_parser.h b/user/ansi_parser.h
index 8e813bd..212aaa4 100644
--- a/user/ansi_parser.h
+++ b/user/ansi_parser.h
@@ -3,6 +3,8 @@
 
 #include <stdlib.h>
 
+extern volatile bool ansi_parser_inhibit; // discard all characters
+
 void ansi_parser_reset(void);
 
 extern volatile u32 ansi_parser_char_cnt;
diff --git a/user/ansi_parser.rl b/user/ansi_parser.rl
index 2f74623..7566210 100644
--- a/user/ansi_parser.rl
+++ b/user/ansi_parser.rl
@@ -19,6 +19,7 @@ static volatile bool inside_string = false;
 
 // public
 volatile u32 ansi_parser_char_cnt = 0;
+volatile bool ansi_parser_inhibit = 0;
 
 void ICACHE_FLASH_ATTR
 ansi_parser_reset(void) {
@@ -83,6 +84,8 @@ ansi_parser(char newchar)
 	static char string_buffer[ANSI_STR_LEN];
 	static int  str_ni;
 
+	if (ansi_parser_inhibit) return;
+
 	// This is used to detect timeout delay (time since last rx char)
 	ansi_parser_char_cnt++;
 
diff --git a/user/apars_utf8.c b/user/apars_utf8.c
index b3f502c..17b7387 100644
--- a/user/apars_utf8.c
+++ b/user/apars_utf8.c
@@ -8,11 +8,22 @@
 #include "apars_utf8.h"
 #include "apars_logging.h"
 #include "screen.h"
+#include "uart_driver.h"
+#include "ansi_parser_callbacks.h"
+#include "ansi_parser.h"
 
-static char utf_collect[4];
-static int utf_i = 0;
+static u8 bytes[4];
+static int utf_len = 0;
 static int utf_j = 0;
 
+ETSTimer timerResumeRx;
+
+void ICACHE_FLASH_ATTR resumeRxCb(void *unused)
+{
+	ansi_dbg("Parser recover.");
+	ansi_parser_inhibit = false;
+}
+
 /**
  * Clear the buffer where we collect pieces of a code point.
  * This is used for parser reset.
@@ -20,11 +31,22 @@ static int utf_j = 0;
 void ICACHE_FLASH_ATTR
 apars_reset_utf8buffer(void)
 {
-	utf_i = 0;
+	utf_len = 0;
 	utf_j = 0;
-	memset(utf_collect, 0, 4);
+	memset(bytes, 0, 4);
 }
 
+//      Code Points      First Byte Second Byte Third Byte Fourth Byte
+//  U+0000 -   U+007F     00 - 7F
+//  U+0080 -   U+07FF     C2 - DF    80 - BF
+//	U+0800 -   U+0FFF     E0         *A0 - BF     80 - BF
+//	U+1000 -   U+CFFF     E1 - EC    80 - BF     80 - BF
+//	U+D000 -   U+D7FF     ED         80 - *9F     80 - BF
+//	U+E000 -   U+FFFF     EE - EF    80 - BF     80 - BF
+//	U+10000 -  U+3FFFF    F0         *90 - BF     80 - BF    80 - BF
+//	U+40000 -  U+FFFFF    F1 - F3    80 - BF     80 - BF    80 - BF
+//	U+100000 - U+10FFFF   F4         80 - *8F     80 - BF    80 - BF
+
 /**
  * Handle a received plain character
  * @param c - received character
@@ -34,28 +56,28 @@ apars_handle_plainchar(char c)
 {
 	// collecting unicode glyphs...
 	if (c & 0x80) {
-		if (utf_i == 0) {
+		if (utf_len == 0) {
 			// start
-			if (c == 192 || c == 193 || c >= 245) {
-				// forbidden codes (would be an overlong sequence)
+			if (c == 0xC0 || c == 0xC1 || c > 0xF4) {
+				// forbidden start codes
 				goto fail;
 			}
 
 			if ((c & 0xE0) == 0xC0) {
-				utf_i = 2;
+				utf_len = 2;
 			}
 			else if ((c & 0xF0) == 0xE0) {
-				utf_i = 3;
+				utf_len = 3;
 			}
 			else if ((c & 0xF8) == 0xF0) {
-				utf_i = 4;
+				utf_len = 4;
 			}
 			else {
 				// chars over 127 that don't start unicode sequences
 				goto fail;
 			}
 
-			utf_collect[0] = c;
+			bytes[0] = c;
 			utf_j = 1;
 		}
 		else {
@@ -63,22 +85,33 @@ apars_handle_plainchar(char c)
 				goto fail;
 			}
 			else {
-				utf_collect[utf_j++] = c;
-				if (utf_j >= utf_i) {
-					screen_putchar(utf_collect);
+				bytes[utf_j++] = c;
+				if (utf_j >= utf_len) {
+					// check for bad sequences
+					if (bytes[0] == 0xF4 && bytes[1] > 0x8F) goto fail;
+					if (bytes[0] == 0xF0 && bytes[1] < 0x90) goto fail;
+					if (bytes[0] == 0xED && bytes[1] > 0x9F) goto fail;
+					if (bytes[0] == 0xE0 && bytes[1] < 0xA0) goto fail;
+
+					screen_putchar((const char *) bytes);
 					apars_reset_utf8buffer();
 				}
 			}
 		}
 	}
 	else {
-		utf_collect[0] = c;
-		utf_collect[1] = 0; // just to make sure it's closed...
-		screen_putchar(utf_collect);
+		bytes[0] = c;
+		bytes[1] = 0; // just to make sure it's closed...
+		screen_putchar((const char *) bytes);
 	}
 
 	return;
-	fail:
-	ansi_warn("Bad UTF-8: %0Xh", c);
+fail:
+	ansi_parser_inhibit = true;
+
+	ansi_warn("BAD UTF8!");
+	apars_show_context();
 	apars_reset_utf8buffer();
+	ansi_dbg("Temporarily inhibiting parser...");
+	TIMER_START(&timerResumeRx, resumeRxCb, 1000, 0);
 }
diff --git a/user/user_main.c b/user/user_main.c
index 7b9a98f..fd735b5 100644
--- a/user/user_main.c
+++ b/user/user_main.c
@@ -28,6 +28,8 @@
 #include "ansi_parser_callbacks.h"
 #include "wifimgr.h"
 #include "persist.h"
+#include "ansi_parser.h"
+#include "ascii.h"
 
 #ifdef ESPFS_POS
 CgiUploadFlashDef uploadParams={
@@ -86,6 +88,7 @@ static ETSTimer prHeapTimer;
 //Main routine. Initialize stdout, the I/O, filesystem and the webserver and we're done.
 void ICACHE_FLASH_ATTR user_init(void)
 {
+	ansi_parser_inhibit = true;
 	serialInitBase();
 
 	// Prevent WiFi starting and connecting by default
@@ -128,9 +131,11 @@ static void ICACHE_FLASH_ATTR user_start(void *unused)
 	captdnsInit();
 	httpdInit(routes, 80);
 
+	ansi_parser_inhibit = false;
+
 	// Print the CANCEL character to indicate the module has restarted
 	// Critically important for client application if any kind of screen persistence / content re-use is needed
-	UART_WriteChar(UART0, 24, UART_TIMEOUT_US); // 0x18 - 24 - CAN
+	UART_WriteChar(UART0, CAN, UART_TIMEOUT_US); // 0x18 - 24 - CAN
 }
 
 // ---- unused funcs removed from sdk to save space ---