diff --git a/sysutils/unetbootin/Makefile b/sysutils/unetbootin/Makefile
index 70bb2cce05f5..88765958f716 100644
--- a/sysutils/unetbootin/Makefile
+++ b/sysutils/unetbootin/Makefile
@@ -1,49 +1,49 @@
 # Created by: Alexey Dokuchaev <danfe@FreeBSD.org>
 
 PORTNAME=	unetbootin
 PORTVERSION=	702
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	sysutils
 MASTER_SITES=	https://github.com/${PORTNAME}/${PORTNAME}/releases/download/${PORTVERSION}/
 DISTNAME=	${PORTNAME}-source-${PORTVERSION}
 
 MAINTAINER=	danfe@FreeBSD.org
 COMMENT=	Bootable Live USB creator for various Linux distributions
 
 LICENSE=	GPLv2+
 
-RUN_DEPENDS=	7z:archivers/p7zip \
+RUN_DEPENDS=	7zz:archivers/7-zip \
 		syslinux:sysutils/syslinux \
 		mke2fs:sysutils/e2fsprogs
 
 USES=		qt:5
 USE_QT=		buildtools_build linguisttools_build qmake_build \
 		core gui network widgets
 QMAKE_ARGS=	DEFINES+=LOCALBASE=\\\\\\\"${LOCALBASE}\\\\\\\"
 
 NO_WRKSUBDIR=	yes
 
 post-patch:
 	@${REINPLACE_CMD} -e 's,/usr/,${PREFIX}/,g' \
 		${WRKSRC}/main.cpp
 	@${REINPLACE_CMD} -e 's,this->setWindowTitle(UNETBOOTINB,& \
 		" ${PORTVERSION}",' ${WRKSRC}/unetbootin.cpp
 
 do-configure:
 	cd ${CONFIGURE_WRKSRC} && ${LUPDATE} unetbootin.pro \
 		     && ${LRELEASE} unetbootin.pro \
 		     && ${QMAKE_ENV} ${QMAKE} ${QMAKE_ARGS}
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/unetbootin ${STAGEDIR}${PREFIX}/bin
 	${INSTALL_DATA} ${WRKSRC}/unetbootin.xpm \
 		${STAGEDIR}${PREFIX}/share/pixmaps
 	@${MKDIR} ${STAGEDIR}${DATADIR}
 	${INSTALL_DATA} ${WRKSRC}/unetbootin_*.qm ${STAGEDIR}${DATADIR}
 .for n in 16 22 24 32 48 64 128 192 256 512
 	@${MKDIR} ${STAGEDIR}${PREFIX}/share/icons/hicolor/${n}x${n}/apps
 	${INSTALL_DATA} ${WRKSRC}/unetbootin_${n}.png \
 		${STAGEDIR}${PREFIX}/share/icons/hicolor/${n}x${n}/apps/unetbootin.png
 .endfor
 
 .include <bsd.port.mk>
diff --git a/sysutils/unetbootin/files/patch-unetbootin.cpp b/sysutils/unetbootin/files/patch-unetbootin.cpp
index f697ec06c21e..30be2861057e 100644
--- a/sysutils/unetbootin/files/patch-unetbootin.cpp
+++ b/sysutils/unetbootin/files/patch-unetbootin.cpp
@@ -1,250 +1,250 @@
 --- unetbootin.cpp.orig	2020-11-09 01:52:38 UTC
 +++ unetbootin.cpp
 @@ -296,8 +296,13 @@ bool unetbootin::ubninitialize(QList<QPair<QString, QS
  	#endif
  	sevzcommand = locatecommand("7z", tr("either"), "p7zip-full");
  #endif // Q_OS_LINUX
 +#ifdef Q_OS_FREEBSD
 +	syslinuxcommand = locatecommand("syslinux", tr("FAT32-formatted USB drive"), "syslinux");
-+	sevzcommand = locatecommand("7z", tr("either"), "p7zip");
++	sevzcommand = locatecommand("7zz", tr("either"), "7-zip");
 +	mke2fscommand = locatecommand("mke2fs", tr("LiveUSB persistence"), "e2fsprogs");
 +#endif // Q_OS_FREEBSD
  	ubntmpf = QDir::toNativeSeparators(QString("%1/").arg(QDir::tempPath()));
 -    #ifdef Q_OS_LINUX
 +    #ifdef Q_OS_UNIX
      if (ubntmpf.isEmpty() || ubntmpf == "/")
      {
          ubntmpf = "/tmp/";
 @@ -648,6 +653,57 @@ QStringList unetbootin::listsanedrives()
  				}
  				*/
  		#endif
 +#ifdef Q_OS_FREEBSD
 +		struct xvfsconf fsconf;
 +		struct statfs *fslist;
 +
 +		/*
 +		 * Make sure that MSDOSFS is configured with the kernel.
 +		 * As a nice side effect, this would allow to compare a
 +		 * number (assigned by VFS) instead of "msdosfs" string
 +		 * when iterating over mounted filesystems.
 +		 */
 +		if (getvfsbyname("msdosfs", &fsconf) == -1)
 +			goto out;
 +
 +		/*
 +		 * Quick sanity check of the number of active mountpoints
 +		 * using the filesystem (we need mounted storage to work).
 +		 */
 +		if (fsconf.vfc_refcount < 1)
 +			goto out;
 +
 +		int numfs = getmntinfo(&fslist, MNT_NOWAIT);
 +		if (numfs < 1)
 +			goto out;
 +
 +		QRegExp pendrives_sdcards("^/dev/(da|mmcsd)\\d+");
 +
 +		for (int i = 0; i < numfs; ++i)
 +		{
 +			/*
 +			 * We're interested in MSDOSFS (FAT) filesystems
 +			 * that are mounted off removable storage (e.g.,
 +			 * USB memsticks, SD cards).  Assume that device
 +			 * names for those are /dev/da* and /dev/mmcsd*.
 +			 * (Perhaps not entirely accurate assumption.)
 +			 */
 +			if ((int)fslist[i].f_type == fsconf.vfc_typenum &&
 +				QString(fslist[i].f_mntfromname)
 +				.contains(pendrives_sdcards))
 +			{
 +				/*
 +				 * Unlike other implementations above, we
 +				 * append tuples of device name *and* the
 +				 * mount point, so we do not have to find
 +				 * mount point separately later.
 +				 */
 +				fulldrivelist.append(QString("%1:%2")
 +					.arg(fslist[i].f_mntfromname)
 +					.arg(fslist[i].f_mntonname));
 +			}
 +		}
 +#endif
  #ifdef Q_OS_MAC
  QString systemprofilertext = callexternapp("system_profiler", "SPStorageDataType");
  QRegExp filesystemregex("File System: (.+)\\n");
 @@ -668,6 +724,7 @@ for (int i = 0; i < filesystemlist.size(); ++i)
  }
  #endif
  	}
 +out:
  	return fulldrivelist;
  }
  
 @@ -1099,7 +1156,12 @@ bool unetbootin::checkifoutofspace(QString destindir)
  	struct statfs diskstatS;
  	if (!statfs(QString(destindir+"/.").toLatin1(), &diskstatS))
  	{
 -		if (diskstatS.f_bavail * diskstatS.f_bfree < 1024)
 +		/*
 +		 * Refuse to work if available disk space is less than 1MB
 +		 * (1024KB).  Even this seems very low, but original value
 +		 * of 1024 bytes was simply ridiculous.
 +		 */
 +		if (diskstatS.f_bsize / 1024 * diskstatS.f_bavail < 1024)
  			outofspace = true;
  	}
  	#endif
 @@ -3354,21 +3416,36 @@ void unetbootin::instIndvfl(QString srcfName, QString 
  				srcF.setFileName(QFile::exists("/usr/share/syslinux/memdisk") ? "/usr/share/syslinux/memdisk" : "/usr/lib/syslinux/memdisk");
  	else if (srcfName == "menu.c32")
  	{
 +#ifdef Q_OS_LINUX
  				srcF.setFileName(QFile::exists("/usr/share/syslinux/menu.c32") ? "/usr/share/syslinux/menu.c32" : "/usr/lib/syslinux/menu.c32");
  				if (QFile::exists("/usr/lib/syslinux/modules/bios/menu.c32"))
  					srcF.setFileName("/usr/lib/syslinux/modules/bios/menu.c32");
 +#endif
 +#ifdef Q_OS_FREEBSD
 +		srcF.setFileName(LOCALBASE "/share/syslinux/bios/com32/menu/menu.c32");
 +#endif
  	}
      else if (srcfName == "libutil.c32")
  	{
 +#ifdef Q_OS_LINUX
                  srcF.setFileName(QFile::exists("/usr/share/syslinux/libutil.c32") ? "/usr/share/syslinux/libutil.c32" : "/usr/lib/syslinux/libutil.c32");
  		if (QFile::exists("/usr/lib/syslinux/modules/bios/libutil.c32"))
  			srcF.setFileName("/usr/lib/syslinux/modules/bios/libutil.c32");
 +#endif
 +#ifdef Q_OS_FREEBSD
 +		srcF.setFileName(LOCALBASE "/share/syslinux/bios/com32/libutil/libutil.c32");
 +#endif
  	}
      else if (srcfName == "libcom32.c32")
  	{
 +#ifdef Q_OS_LINUX
                  srcF.setFileName(QFile::exists("/usr/share/syslinux/libcom32.c32") ? "/usr/share/syslinux/libcom32.c32" : "/usr/lib/syslinux/libcom32.c32");
  		if (QFile::exists("/usr/lib/syslinux/modules/bios/libcom32.c32"))
  			srcF.setFileName("/usr/lib/syslinux/modules/bios/libcom32.c32");
 +#endif
 +#ifdef Q_OS_FREEBSD
 +		srcF.setFileName(LOCALBASE "/share/syslinux/bios/com32/lib/libcom32.c32");
 +#endif
  	}
      else if (srcfName == "mbr.bin")
  	{
 @@ -3458,11 +3535,26 @@ void unetbootin::runinst()
  	}
  	if (installType == tr("USB Drive"))
  	{
 +#ifdef Q_OS_LINUX
  		targetDev = driveselect->currentText();
  		devluid = getdevluid(targetDev);
  		ginstallDir = "";
  		installDir = ginstallDir;
  		targetDrive = QString("%1/").arg(locatemountpoint(targetDev));
 +#endif
 +#ifdef Q_OS_FREEBSD
 +		QStringList driveinfo = driveselect->currentText().split(":");
 +		if (driveinfo.size() < 2) {
 +			QTextStream out(stdout);
 +			out << "/!\\ Target drive must be passed as "
 +			    "<device-name>:<mount-point>" << endl << flush;
 +			QApplication::exit();
 +			exit(1);
 +		}
 +		targetDev = driveinfo.at(0);
 +		installDir = ginstallDir = "";
 +		targetDrive = QString("%1/").arg(driveinfo.at(1));
 +#endif
  	}
  #ifdef Q_OS_LINUX
  	if (targetDev.contains(QRegExp("p\\d$")))
 @@ -3470,7 +3562,7 @@ void unetbootin::runinst()
  	else
  		rawtargetDev = QString(targetDev).remove(QRegExp("\\d$"));
  #endif
 -#ifdef Q_OS_MAC
 +#ifdef Q_OS_UNIX
  	rawtargetDev = QString(targetDev).remove(QRegExp("s\\d$"));
  #endif
  	#endif
 @@ -4223,21 +4315,47 @@ void unetbootin::runinstusb()
              instIndvfl("libutil.c32", QString("%1libutil.c32").arg(targetPath));
              instIndvfl("libcom32.c32", QString("%1libcom32.c32").arg(targetPath));
          }
 +	setuppersspace();
 +#ifdef Q_OS_FREEBSD
 +		/*
 +		 * On FreeBSD, we only support installing on MSDOSFS (no
 +		 * extlinux in the ports).  This also simplifies things
 +		 * a bit, and that's what most users usually want anyway.
 +		 *
 +		 * Because of syslinux' stupidity, we have to remove any
 +		 * existing ldlinux.c32 and ldlinux.sys files, otherwise
 +		 * it will fail to install loader (even with -f switch).
 +		 * Then we have to unmount the filesystem to avoid the
 +		 * "Operation not permitted" error, and must enforce it
 +		 * because syslinux expects a block device, and, well,
 +		 * there are no "block devices" in FreeBSD.
 +		 */
 +		rmFile(targetPath + "ldlinux.c32");
 +		rmFile(targetPath + "ldlinux.sys");
 +		callexternapp("umount", targetDev);
 +		callexternapp(syslinuxcommand, "-i -f " + targetDev);
 +
 +		if (rawtargetDev != targetDev)
 +		{
 +			/*
 +			 * We have partition table (not operating on raw
 +			 * disk), so we need to install MBR and mark our
 +			 * partition as active.  Assume our targetDev is
 +			 * /dev/{da,mmcsd}XsY and use the last digit as
 +			 * partition index for gpart(8).
 +			 */
 +			QString idx = targetDev.right(1);
 +			callexternapp("gpart",
 +				"bootcode -b /boot/mbr " + rawtargetDev);
 +			callexternapp("gpart", "set -a "
 +				"active -i " + idx + " " + rawtargetDev);
 +		}
 +#endif
  	fininstall();
  }
  
 -void unetbootin::killApplication()
 +void unetbootin::setuppersspace()
  {
 -	exit(0);
 -}
 -
 -void unetbootin::fininstall()
 -{
 -	#ifdef Q_OS_UNIX
 -	this->tprogress->setValue(this->tprogress->maximum()*2/3);
 -	pdesc1->setText(tr("Syncing filesystems"));
 -	callexternapp("sync", "");
 -	#endif
  	if (this->persistenceSpaceMB > 0)
  	{
  		pdesc1->setText(tr("Setting up persistence"));
 @@ -4276,6 +4394,20 @@ void unetbootin::fininstall()
  		rmFile(mke2fscommand);
  #endif
  	}
 +}
 +
 +void unetbootin::killApplication()
 +{
 +	exit(0);
 +}
 +
 +void unetbootin::fininstall()
 +{
 +	#ifdef Q_OS_UNIX
 +	this->tprogress->setValue(this->tprogress->maximum()*2/3);
 +	pdesc1->setText(tr("Syncing filesystems"));
 +	callexternapp("sync", "");
 +	#endif
  	pdesc1->setText("");
  	progresslayer->setEnabled(false);
  	progresslayer->hide();