diff --git a/cross/transmission/Makefile b/cross/transmission/Makefile
index 24a4df66457..13cdb4c1800 100644
--- a/cross/transmission/Makefile
+++ b/cross/transmission/Makefile
@@ -14,4 +14,13 @@ LICENSE  = GPLv2/GPLv3
 GNU_CONFIGURE = 1
 CONFIGURE_ARGS = HAVE_CXX=yes --disable-nls --enable-daemon --enable-utp
 
+ifeq ($(findstring $(ARCH), ppc824x ppc853x),$(ARCH))
+ifneq (5,$(firstword $(sort $(TCVERSION) 5)))
+# toolchains before version 5 require the old linux quota version
+# related issue: https://github.com/transmission/transmission/issues/591
+ADDITIONAL_CFLAGS = -D_LINUX_QUOTA_VERSION=1
+endif
+endif
+
+
 include ../../mk/spksrc.cross-cc.mk
diff --git a/spk/transmission/Makefile b/spk/transmission/Makefile
index 4f9cf376982..93418e43916 100644
--- a/spk/transmission/Makefile
+++ b/spk/transmission/Makefile
@@ -33,8 +33,12 @@ POST_STRIP_TARGET = transmission_extra_install
 BUSYBOX_CONFIG = usrmng
 ENV += BUSYBOX_CONFIG="$(BUSYBOX_CONFIG)"
 
+# build cross/curl without bundle of ca certificates (cert.pem)
+export CURL_SKIP_CA_BUNDLE = true
+
 include ../../mk/spksrc.spk.mk
 
+
 .PHONY: transmission_extra_install
 transmission_extra_install:
 	install -m 755 -d $(STAGING_DIR)/var
diff --git a/toolchains/syno-ppc853x-4.2/Makefile b/toolchains/syno-ppc853x-4.2/Makefile
new file mode 100644
index 00000000000..5fac3603f6a
--- /dev/null
+++ b/toolchains/syno-ppc853x-4.2/Makefile
@@ -0,0 +1,21 @@
+TC_NAME = syno-$(TC_ARCH)
+
+TC_ARCH = ppc853x
+TC_VERS = 4.2
+TC_FIRMWARE = 3.1-1594
+
+TC_DIST = gcc343_glibc234_ppc853x-GPL
+TC_EXT = tgz
+TC_DIST_NAME = $(TC_DIST).$(TC_EXT)
+TC_DIST_SITE = https://sourceforge.net/projects/dsgpl/files/DSM%204.2%20Tool%20Chains/PowerPC%20853x%20Linux%202.6.32
+
+TC_BASE_DIR = powerpc-linux-gnuspe
+TC_PREFIX = powerpc-linux-gnuspe
+TC_TARGET = powerpc-unknown-linux
+
+TC_CFLAGS = -I$(WORK_DIR)/$(TC_BASE_DIR)/$(TC_BASE_DIR)/include -mcpu=8548 -mhard-float -mfloat-gprs=double
+TC_CPPFLAGS = -I$(WORK_DIR)/$(TC_BASE_DIR)/$(TC_BASE_DIR)/include -mcpu=8548 -mhard-float -mfloat-gprs=double
+TC_CXXFLAGS = -I$(WORK_DIR)/$(TC_BASE_DIR)/$(TC_BASE_DIR)/include -mcpu=8548 -mhard-float -mfloat-gprs=double
+TC_LDFLAGS = -L$(WORK_DIR)/$(TC_BASE_DIR)/$(TC_BASE_DIR)/lib
+
+include ../../mk/spksrc.tc.mk
diff --git a/toolchains/syno-ppc853x-4.2/digests b/toolchains/syno-ppc853x-4.2/digests
new file mode 100644
index 00000000000..e411e906036
--- /dev/null
+++ b/toolchains/syno-ppc853x-4.2/digests
@@ -0,0 +1,3 @@
+gcc343_glibc234_ppc853x-GPL.tgz SHA1 ef5054f30d87a06ab287e86c5e2e123467073111
+gcc343_glibc234_ppc853x-GPL.tgz SHA256 eab4aebf489374abc3a5334c139b3cb97a238a4c2b2fb0db3cac66b668bc7103
+gcc343_glibc234_ppc853x-GPL.tgz MD5 1bcea0556c50a538e3142b9706c283b7