Tried all; Wifi not working Ubuntu 16.04 Qualcomm Atheros Device 0042 (rev 31)

Question

I've not managed to get my wifi working for longer than 30 seconds. I work on a brand new, cleanly installed Asus X542UA with Ubuntu 16.04 I tried the following sollutions, but none worked:

Sudo apt-get update && sudo apt-get upgrade

These two: Qualcomm Atheros Device [168c:0042] (rev 30) Wi-Fi driver installation

No Wifi in Qualcom Atheros - Ubuntu 16.04 - Acer Aspire E 15

here is my lspci:

00:00.0 Host bridge: Intel Corporation Device 5904 (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Device 5916 (rev 02)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 02)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI     Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller (rev 21)
00:15.1 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Device 9d10 (rev f1)
00:1c.4 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port (rev f1)
00:1e.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO UART Controller (rev 21)
00:1e.2 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO SPI Controller (rev 21)
00:1f.0 ISA bridge: Intel Corporation Device 9d4e (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21) 
00:1f.3 Audio device: Intel Corporation Device 9d71 (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
03:00.0 Network controller: Qualcomm Atheros Device 0042 (rev 31)

Here is the rfkill list all:

0: hci0: Bluetooth
    Soft blocked: yes
    Hard blocked: no
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

dmesg:

[    2.400102] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/pre-cal-pci-0000:03:00.0.bin failed with error -2
[    2.400112] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/cal-pci-0000:03:00.0.bin failed with error -2
[    2.403114] ath10k_pci 0000:03:00.0: qca9377 hw1.1 target 0x05020001 chip_id 0x003821ff sub 1a3b:2b31
[    2.403116] ath10k_pci 0000:03:00.0: kconfig debug 0 debugfs 1 tracing 1 dfs 0 testmode 0
[    2.403581] ath10k_pci 0000:03:00.0: firmware ver WLAN.TF.1.0-00267-1 api 5 features ignore-otp crc32 79cea2c7
[    2.467684] ath10k_pci 0000:03:00.0: board_file api 2 bmi_id N/A crc32 8aedfa4a
[    4.300919] ath10k_pci 0000:03:00.0: htt-ver 3.1 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1
[    4.346715] ath10k_pci 0000:03:00.0 wlp3s0: renamed from wlan0

Anyone a solution? BTW I tried a distro update to 17.04 but besides it didn't fix my wifi it also gave massive errors on keyboard and mouspad, so did a clean install 16.04