diff --git a/Makefile b/Makefile
index e6e2706..a99c450 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@ UNAME           = $(shell uname)
 CFLAGS		= -g -O -Wall -Werror -DVERSION='"$(VERSION).$(GITCOUNT)"'
 LDFLAGS		= -g
 
-OBJS		= main.o util.o radio.o dfu-libusb.o uv380.o md380.o rd5r.o gd77.o hid.o serial.o
+OBJS		= main.o util.o radio.o dfu-libusb.o uv380.o md380.o rd5r.o gd77.o hid.o serial.o d868uv.o
 LIBS            = -lusb-1.0
 
 # Linux
@@ -37,6 +37,7 @@ dmrconfig.linux: dmrconfig
 		strip $@
 
 ###
+d868uv.o: d868uv.c radio.h util.h
 dfu-libusb.o: dfu-libusb.c util.h
 dfu-windows.o: dfu-windows.c util.h
 gd77.o: gd77.c radio.h util.h
@@ -48,5 +49,6 @@ main.o: main.c radio.h util.h
 md380.o: md380.c radio.h util.h
 radio.o: radio.c radio.h util.h
 rd5r.o: rd5r.c radio.h util.h
+serial.o: serial.c util.h
 util.o: util.c util.h
 uv380.o: uv380.c radio.h util.h
diff --git a/Makefile-mingw b/Makefile-mingw
index 9cbbe55..242a941 100644
--- a/Makefile-mingw
+++ b/Makefile-mingw
@@ -5,7 +5,7 @@ GITCOUNT        = $(shell git rev-list HEAD --count)
 CFLAGS		= -g -O -Wall -Werror -DVERSION='"$(VERSION).$(GITCOUNT)"'
 LDFLAGS		= -g -s
 
-OBJS		= main.o util.o radio.o dfu-windows.o uv380.o md380.o rd5r.o gd77.o hid.o hid-windows.o serial.o
+OBJS		= main.o util.o radio.o dfu-windows.o uv380.o md380.o rd5r.o gd77.o hid.o hid-windows.o serial.o d868uv.o
 LIBS            = -lhid -lsetupapi
 
 # Compiling Windows binary from Linux
@@ -33,6 +33,7 @@ install:	dmrconfig
 		install -c -s dmrconfig /usr/local/bin/dmrconfig
 
 ###
+d868uv.o: d868uv.c radio.h util.h
 dfu-libusb.o: dfu-libusb.c util.h
 dfu-windows.o: dfu-windows.c util.h
 gd77.o: gd77.c radio.h util.h
@@ -44,5 +45,6 @@ main.o: main.c radio.h util.h
 md380.o: md380.c radio.h util.h
 radio.o: radio.c radio.h util.h
 rd5r.o: rd5r.c radio.h util.h
+serial.o: serial.c util.h
 util.o: util.c util.h
 uv380.o: uv380.c radio.h util.h
diff --git a/d868uv.c b/d868uv.c
new file mode 100644
index 0000000..0a5c937
--- /dev/null
+++ b/d868uv.c
@@ -0,0 +1,466 @@
+/*
+ * Interface to Anytone D868UV.
+ *
+ * Copyright (C) 2018 Serge Vakulenko, KK6ABQ
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *   3. The name of the author may not be used to endorse or promote products
+ *      derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <sys/stat.h>
+#include "radio.h"
+#include "util.h"
+
+#define NCHAN           4000
+#define NCONTACTS       10000
+#define NZONES          250
+#define NGLISTS         250
+#define NSCANL          250
+#define NMESSAGES       100
+
+#define MEMSZ           0xd0000
+
+//
+// Print a generic information about the device.
+//
+static void d868uv_print_version(radio_device_t *radio, FILE *out)
+{
+    //TODO
+#if 0
+    unsigned char *timestamp = GET_TIMESTAMP();
+    static const char charmap[16] = "0123456789:;<=>?";
+
+    if (*timestamp != 0xff) {
+        fprintf(out, "Last Programmed Date: %d%d%d%d-%d%d-%d%d",
+            timestamp[0] >> 4, timestamp[0] & 15, timestamp[1] >> 4, timestamp[1] & 15,
+            timestamp[2] >> 4, timestamp[2] & 15, timestamp[3] >> 4, timestamp[3] & 15);
+        fprintf(out, " %d%d:%d%d:%d%d\n",
+            timestamp[4] >> 4, timestamp[4] & 15, timestamp[5] >> 4, timestamp[5] & 15,
+            timestamp[6] >> 4, timestamp[6] & 15);
+        fprintf(out, "CPS Software Version: V%c%c.%c%c\n",
+            charmap[timestamp[7] & 15], charmap[timestamp[8] & 15],
+            charmap[timestamp[9] & 15], charmap[timestamp[10] & 15]);
+    }
+#endif
+}
+
+//
+// Read memory image from the device.
+//
+static void d868uv_download(radio_device_t *radio)
+{
+    //TODO
+#if 0
+    int bno;
+
+    for (bno=0; bno<MEMSZ/1024; bno++) {
+        dfu_read_block(bno, &radio_mem[bno*1024], 1024);
+
+        ++radio_progress;
+        if (radio_progress % 32 == 0) {
+            fprintf(stderr, "#");
+            fflush(stderr);
+        }
+    }
+#endif
+}
+
+//
+// Write memory image to the device.
+//
+static void d868uv_upload(radio_device_t *radio, int cont_flag)
+{
+    //TODO
+#if 0
+    int bno;
+
+    dfu_erase(0, MEMSZ);
+
+    for (bno=0; bno<MEMSZ/1024; bno++) {
+        dfu_write_block(bno, &radio_mem[bno*1024], 1024);
+
+        ++radio_progress;
+        if (radio_progress % 32 == 0) {
+            fprintf(stderr, "#");
+            fflush(stderr);
+        }
+    }
+#endif
+}
+
+//
+// Check whether the memory image is compatible with this device.
+//
+static int d868uv_is_compatible(radio_device_t *radio)
+{
+    return 1;
+}
+
+//
+// Print full information about the device configuration.
+//
+static void d868uv_print_config(radio_device_t *radio, FILE *out, int verbose)
+{
+    //TODO
+}
+
+//
+// Read memory image from the binary file.
+//
+static void d868uv_read_image(radio_device_t *radio, FILE *img)
+{
+    //TODO
+#if 0
+    struct stat st;
+
+    // Guess device type by file size.
+    if (fstat(fileno(img), &st) < 0) {
+        fprintf(stderr, "Cannot get file size.\n");
+        exit(-1);
+    }
+    switch (st.st_size) {
+    case MEMSZ:
+        // IMG file.
+        if (fread(&radio_mem[0], 1, MEMSZ, img) != MEMSZ) {
+            fprintf(stderr, "Error reading image data.\n");
+            exit(-1);
+        }
+        break;
+    case MEMSZ + 0x225 + 0x10:
+        // RTD file.
+        // Header 0x225 bytes and footer 0x10 bytes at 0x40225.
+        fseek(img, 0x225, SEEK_SET);
+        if (fread(&radio_mem[0], 1, 0x40000, img) != 0x40000) {
+            fprintf(stderr, "Error reading image data.\n");
+            exit(-1);
+        }
+        fseek(img, 0x10, SEEK_CUR);
+        if (fread(&radio_mem[0x40000], 1, MEMSZ - 0x40000, img) != MEMSZ - 0x40000) {
+            fprintf(stderr, "Error reading image data.\n");
+            exit(-1);
+        }
+        break;
+    default:
+        fprintf(stderr, "Unrecognized file size %u bytes.\n", (int) st.st_size);
+        exit(-1);
+    }
+#endif
+}
+
+//
+// Save memory image to the binary file.
+//
+static void d868uv_save_image(radio_device_t *radio, FILE *img)
+{
+    //TODO
+#if 0
+    fwrite(&radio_mem[0], 1, MEMSZ, img);
+#endif
+}
+
+//
+// Parse the scalar parameter.
+//
+static void d868uv_parse_parameter(radio_device_t *radio, char *param, char *value)
+{
+    //TODO
+    fprintf(stderr, "Unknown parameter: %s = %s\n", param, value);
+    exit(-1);
+}
+
+//
+// Parse table header.
+// Return table id, or 0 in case of error.
+//
+static int d868uv_parse_header(radio_device_t *radio, char *line)
+{
+    if (strncasecmp(line, "Digital", 7) == 0)
+        return 'D';
+    if (strncasecmp(line, "Analog", 6) == 0)
+        return 'A';
+    if (strncasecmp(line, "Zone", 4) == 0)
+        return 'Z';
+    if (strncasecmp(line, "Scanlist", 8) == 0)
+        return 'S';
+    if (strncasecmp(line, "Contact", 7) == 0)
+        return 'C';
+    if (strncasecmp(line, "Grouplist", 9) == 0)
+        return 'G';
+    if (strncasecmp(line, "Message", 7) == 0)
+        return 'M';
+    return 0;
+}
+
+//
+// Parse one line of table data.
+// Return 0 on failure.
+//
+static int d868uv_parse_row(radio_device_t *radio, int table_id, int first_row, char *line)
+{
+    //TODO
+#if 0
+    switch (table_id) {
+    case 'D': return parse_digital_channel(radio, first_row, line);
+    case 'A': return parse_analog_channel(radio, first_row, line);
+    case 'Z': return parse_zones(first_row, line);
+    case 'S': return parse_scanlist(first_row, line);
+    case 'C': return parse_contact(first_row, line);
+    case 'G': return parse_grouplist(first_row, line);
+    case 'M': return parse_messages(first_row, line);
+    }
+#endif
+    return 0;
+}
+
+//
+// Update timestamp.
+//
+static void d868uv_update_timestamp(radio_device_t *radio)
+{
+    //TODO
+#if 0
+    unsigned char *timestamp = GET_TIMESTAMP();
+    char p[16];
+
+    // Last Programmed Date
+    get_timestamp(p);
+    timestamp[0] = ((p[0]  & 0xf) << 4) | (p[1]  & 0xf); // year upper
+    timestamp[1] = ((p[2]  & 0xf) << 4) | (p[3]  & 0xf); // year lower
+    timestamp[2] = ((p[4]  & 0xf) << 4) | (p[5]  & 0xf); // month
+    timestamp[3] = ((p[6]  & 0xf) << 4) | (p[7]  & 0xf); // day
+    timestamp[4] = ((p[8]  & 0xf) << 4) | (p[9]  & 0xf); // hour
+    timestamp[5] = ((p[10] & 0xf) << 4) | (p[11] & 0xf); // minute
+    timestamp[6] = ((p[12] & 0xf) << 4) | (p[13] & 0xf); // second
+
+    // CPS Software Version: Vdx.xx
+    const char *dot = strchr(VERSION, '.');
+    if (dot) {
+        timestamp[7] = 0x0d; // Prints as '='
+        timestamp[8] = dot[-1] & 0x0f;
+        if (dot[2] == '.') {
+            timestamp[9] = 0;
+            timestamp[10] = dot[1] & 0x0f;
+        } else {
+            timestamp[9] = dot[1] & 0x0f;
+            timestamp[10] = dot[2] & 0x0f;
+        }
+    }
+#endif
+}
+
+//
+// Check that configuration is correct.
+// Return 0 on error.
+//
+static int d868uv_verify_config(radio_device_t *radio)
+{
+    //TODO
+#if 0
+    int i, k, nchannels = 0, nzones = 0, nscanlists = 0, ngrouplists = 0;
+    int ncontacts = 0, nerrors = 0;
+
+    // Channels: check references to scanlists, contacts and grouplists.
+    for (i=0; i<NCHAN; i++) {
+        channel_t *ch = GET_CHANNEL(i);
+
+        if (!VALID_CHANNEL(ch))
+            continue;
+
+        nchannels++;
+        if (ch->scan_list_index != 0) {
+            scanlist_t *sl = GET_SCANLIST(ch->scan_list_index - 1);
+
+            if (!VALID_SCANLIST(sl)) {
+                fprintf(stderr, "Channel %d '", i+1);
+                print_unicode(stderr, ch->name, 16, 0);
+                fprintf(stderr, "': scanlist %d not found.\n", ch->scan_list_index);
+                nerrors++;
+            }
+        }
+        if (ch->contact_name_index != 0) {
+            contact_t *ct = GET_CONTACT(ch->contact_name_index - 1);
+
+            if (!VALID_CONTACT(ct)) {
+                fprintf(stderr, "Channel %d '", i+1);
+                print_unicode(stderr, ch->name, 16, 0);
+                fprintf(stderr, "': contact %d not found.\n", ch->contact_name_index);
+                nerrors++;
+            }
+        }
+        if (ch->group_list_index != 0) {
+            grouplist_t *gl = GET_GROUPLIST(ch->group_list_index - 1);
+
+            if (!VALID_GROUPLIST(gl)) {
+                fprintf(stderr, "Channel %d '", i+1);
+                print_unicode(stderr, ch->name, 16, 0);
+                fprintf(stderr, "': grouplist %d not found.\n", ch->group_list_index);
+                nerrors++;
+            }
+        }
+    }
+
+    // Zones: check references to channels.
+    for (i=0; i<NZONES; i++) {
+        zone_t     *z    = GET_ZONE(i);
+        zone_ext_t *zext = GET_ZONEXT(i);
+
+        if (!VALID_ZONE(z))
+            continue;
+
+        nzones++;
+
+        // Zone A
+        for (k=0; k<16; k++) {
+            int cnum = z->member_a[k];
+
+            if (cnum != 0) {
+                channel_t *ch = GET_CHANNEL(cnum - 1);
+
+                if (!VALID_CHANNEL(ch)) {
+                    fprintf(stderr, "Zone %da '", i+1);
+                    print_unicode(stderr, z->name, 16, 0);
+                    fprintf(stderr, "': channel %d not found.\n", cnum);
+                    nerrors++;
+                }
+            }
+        }
+        for (k=0; k<48; k++) {
+            int cnum = zext->ext_a[k];
+
+            if (cnum != 0) {
+                channel_t *ch = GET_CHANNEL(cnum - 1);
+
+                if (!VALID_CHANNEL(ch)) {
+                    fprintf(stderr, "Zone %da '", i+1);
+                    print_unicode(stderr, z->name, 16, 0);
+                    fprintf(stderr, "': channel %d not found.\n", cnum);
+                    nerrors++;
+                }
+            }
+        }
+
+        // Zone B
+        for (k=0; k<64; k++) {
+            int cnum = zext->member_b[k];
+
+            if (cnum != 0) {
+                channel_t *ch = GET_CHANNEL(cnum - 1);
+
+                if (!VALID_CHANNEL(ch)) {
+                    fprintf(stderr, "Zone %db '", i+1);
+                    print_unicode(stderr, z->name, 16, 0);
+                    fprintf(stderr, "': channel %d not found.\n", cnum);
+                    nerrors++;
+                }
+            }
+        }
+    }
+
+    // Scanlists: check references to channels.
+    for (i=0; i<NSCANL; i++) {
+        scanlist_t *sl = GET_SCANLIST(i);
+
+        if (!VALID_SCANLIST(sl))
+            continue;
+
+        nscanlists++;
+        for (k=0; k<31; k++) {
+            int cnum = sl->member[k];
+
+            if (cnum != 0) {
+                channel_t *ch = GET_CHANNEL(cnum - 1);
+
+                if (!VALID_CHANNEL(ch)) {
+                    fprintf(stderr, "Scanlist %d '", i+1);
+                    print_unicode(stderr, sl->name, 16, 0);
+                    fprintf(stderr, "': channel %d not found.\n", cnum);
+                    nerrors++;
+                }
+            }
+        }
+    }
+
+    // Grouplists: check references to contacts.
+    for (i=0; i<NGLISTS; i++) {
+        grouplist_t *gl = GET_GROUPLIST(i);
+
+        if (!VALID_GROUPLIST(gl))
+            continue;
+
+        ngrouplists++;
+        for (k=0; k<32; k++) {
+            int cnum = gl->member[k];
+
+            if (cnum != 0) {
+                contact_t *ct = GET_CONTACT(cnum - 1);
+
+                if (!VALID_CONTACT(ct)) {
+                    fprintf(stderr, "Grouplist %d '", i+1);
+                    print_unicode(stderr, gl->name, 16, 0);
+                    fprintf(stderr, "': contact %d not found.\n", cnum);
+                    nerrors++;
+                }
+            }
+        }
+    }
+
+    // Count contacts.
+    for (i=0; i<NCONTACTS; i++) {
+        contact_t *ct = GET_CONTACT(i);
+
+        if (VALID_CONTACT(ct))
+            ncontacts++;
+    }
+
+    if (nerrors > 0) {
+        fprintf(stderr, "Total %d errors.\n", nerrors);
+        return 0;
+    }
+    fprintf(stderr, "Total %d channels, %d zones, %d scanlists, %d contacts, %d grouplists.\n",
+        nchannels, nzones, nscanlists, ncontacts, ngrouplists);
+#endif
+    return 1;
+}
+
+//
+// TYT MD-UV380
+//
+radio_device_t radio_d868uv = {
+    "Anytone AT-D868UV",
+    d868uv_download,
+    d868uv_upload,
+    d868uv_is_compatible,
+    d868uv_read_image,
+    d868uv_save_image,
+    d868uv_print_version,
+    d868uv_print_config,
+    d868uv_verify_config,
+    d868uv_parse_parameter,
+    d868uv_parse_header,
+    d868uv_parse_row,
+    d868uv_update_timestamp,
+    //d868uv_write_csv,
+};
diff --git a/radio.c b/radio.c
index 0c860e5..0d5592f 100644
--- a/radio.c
+++ b/radio.c
@@ -49,6 +49,7 @@ static struct {
     { "ZN><:",      &radio_rt27d },     // Radtel RT-27D
     { "BF-5R",      &radio_rd5r },      // Baofeng RD-5R
     { "MD-760P",    &radio_gd77 },      // Radioddity GD-77, version 3.1.1 and later
+    { "D868UVE",    &radio_d868uv },    // Anytone AT-D868UV
     { 0, 0 }
 };
 
diff --git a/radio.h b/radio.h
index b7dabe7..99f8582 100644
--- a/radio.h
+++ b/radio.h
@@ -124,6 +124,7 @@ extern radio_device_t radio_dp880;      // Zastone DP880
 extern radio_device_t radio_rt27d;      // Radtel RT-27D
 extern radio_device_t radio_rd5r;       // Baofeng RD-5R
 extern radio_device_t radio_gd77;       // Radioddity GD-77, version 3.1.1 and later
+extern radio_device_t radio_d868uv;     // Anytone AT-D868UV
 
 //
 // Radio: memory contents.
diff --git a/serial.c b/serial.c
index ba5f2d8..756708b 100644
--- a/serial.c
+++ b/serial.c
@@ -59,8 +59,10 @@
 static char *dev_path;
 
 static const unsigned char CMD_PRG[]   = "PROGRAM";
+static const unsigned char CMD_PRG2[]  = "\2";
 static const unsigned char CMD_QX[]    = "QX\6";
-static const unsigned char CMD_ACK2[]  = "\2";
+static const unsigned char CMD_ACK[]   = "\6";
+static const unsigned char CMD_END[]   = "END";
 
 //
 // Encode the speed in bits per second into bit value
@@ -250,26 +252,6 @@ again:
     return got;
 }
 
-//
-// Close the serial port.
-//
-void serial_close()
-{
-#if defined(__WIN32__) || defined(WIN32)
-    if (fd != INVALID_HANDLE_VALUE) {
-        SetCommState(fd, &saved_mode);
-        CloseHandle(fd);
-        fd = INVALID_HANDLE_VALUE;
-    }
-#else
-    if (fd >= 0) {
-        tcsetattr(fd, TCSANOW, &saved_mode);
-        close(fd);
-        fd = -1;
-    }
-#endif
-}
-
 //
 // Open the serial port.
 // Return -1 on error.
@@ -601,8 +583,33 @@ static int send_recv(const unsigned char *cmd, int cmdlen,
     return 1;
 }
 
+//
+// Close the serial port.
+//
+void serial_close()
+{
+#if defined(__WIN32__) || defined(WIN32)
+    if (fd != INVALID_HANDLE_VALUE) {
+        SetCommState(fd, &saved_mode);
+        CloseHandle(fd);
+        fd = INVALID_HANDLE_VALUE;
+    }
+#else
+    if (fd >= 0) {
+        unsigned char ack[1];
+
+        send_recv(CMD_END, 3, ack, 1);
+
+        tcsetattr(fd, TCSANOW, &saved_mode);
+        close(fd);
+        fd = -1;
+    }
+#endif
+}
+
 //
 // Query and return the device identification string.
+// On error, return NULL.
 //
 const char *serial_identify()
 {
@@ -614,7 +621,7 @@ const char *serial_identify()
     }
 
     send_recv(CMD_PRG, 7, ack, 3);
-    if (ack[0] != CMD_QX[0] || ack[1] != CMD_QX[1] || ack[2] != CMD_QX[2]) {
+    if (memcmp(ack, CMD_QX, 3) != 0) {
         fprintf(stderr, "%s: Wrong PRG acknowledge %02x-%02x-%02x, expected %02x-%02x-%02x\n",
             __func__, ack[0], ack[1], ack[2], CMD_QX[0], CMD_QX[1], CMD_QX[2]);
         return 0;
@@ -623,9 +630,14 @@ const char *serial_identify()
     // Reply:
     // 49 44 38 36 38 55 56 45 00 56 31 30 32 00 00 06
     //  I  D  8  6  8  U  V  E     V  1  0  2
-    send_recv(CMD_ACK2, 1, reply, 16);
+    send_recv(CMD_PRG2, 1, reply, 16);
+    if (reply[0] != 'I' || reply[15] != CMD_ACK[0]) {
+        fprintf(stderr, "%s: Wrong PRG2 reply %02x-...-%02x, expected %02x-...-%02x\n",
+            __func__, reply[0], reply[15], 'I', CMD_ACK[0]);
+        return 0;
+    }
 
     // Terminate the string.
     reply[8] = 0;
-    return (char*)reply;
+    return (char*)&reply[1];
 }