Download v18.06.2 release A5-V11 router

Hi
I would like to use v18.06.2 release for an A5-V11 router, but I cannot access firmware.
https://downloads.openwrt.org/releases/18.06.2/targets/ramips/rt305x/ link not live (missing rt305x directory)

The official buildbot failes to build for ramips/rt305x target.

http://release-builds.openwrt.org/18.06/images/builders/ramips%2Frt305x

It seems that the build failed due to an error in A5-V11 router. (generated binary is larger than flash size)

WARNING: Image file /build/openwrt-18.06/slaves/phase1/ramips_rt305x/build/build_dir/target-mipsel_24kc_musl/linux-ramips_rt305x/tmp/openwrt-18.06.2-ramips-rt305x-a5-v11-squashfs-sysupgrade.bin is too big
...
WARNING: Image file /build/openwrt-18.06/slaves/phase1/ramips_rt305x/build/build_dir/target-mipsel_24kc_musl/linux-ramips_rt305x/tmp/openwrt-18.06.2-ramips-rt305x-a5-v11-squashfs-factory.bin is too big
/build/openwrt-18.06/slaves/phase1/ramips_rt305x/build/staging_dir/host/bin/mkporayfw -B A5-V11 -F 4M -f /build/openwrt-18.06/slaves/phase1/ramips_rt305x/build/build_dir/target-mipsel_24kc_musl/linux-ramips_rt305x/tmp/openwrt-18.06.2-ramips-rt305x-a5-v11-squashfs-factory.bin -o /build/openwrt-18.06/slaves/phase1/ramips_rt305x/build/build_dir/target-mipsel_24kc_musl/linux-ramips_rt305x/tmp/openwrt-18.06.2-ramips-rt305x-a5-v11-squashfs-factory.bin.new
[mkporayfw] *** error: stat failed on /build/openwrt-18.06/slaves/phase1/ramips_rt305x/build/build_dir/target-mipsel_24kc_musl/linux-ramips_rt305x/tmp/openwrt-18.06.2-ramips-rt305x-a5-v11-squashfs-factory.bin:No such file or directory
Makefile:288: recipe for target '/build/openwrt-18.06/slaves/phase1/ramips_rt305x/build/build_dir/target-mipsel_24kc_musl/linux-ramips_rt305x/tmp/openwrt-18.06.2-ramips-rt305x-a5-v11-squashfs-factory.bin' failed
make[4]: *** [/build/openwrt-18.06/slaves/phase1/ramips_rt305x/build/build_dir/target-mipsel_24kc_musl/linux-ramips_rt305x/tmp/openwrt-18.06.2-ramips-rt305x-a5-v11-squashfs-factory.bin] Error 255
make[4]: *** Waiting for unfinished jobs....

I'm interested too, what's the procedure in order to fix it?

For now, there is no way other than building images for this device by yourself.

This device's 4 MB Flash is too small for OpenWrt already.
https://openwrt.org/supported_devices/432_warning

all right, but why not build the contents of the packages directory (and 8M or 16M flash)?