how to extract (or keep) data with bootloop M8?

a friend gave me his M8, stuck on bootloader, cant get to normal boot
problem is while i can do a clean install and wipe everything he needs the pics on it

any ideas on how to extract info without deleting it?

Code:

---

C:\>adb2\fastboot getvar all
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 1.25.214500021.0
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 4.16.401.13
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: FA473WM02178
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: m8_ul
(bootloader) platform: hTCBmsm8974
(bootloader) modelid: 0P6B10000
(bootloader) cidnum: HTC__K18
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: f063fb42
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.031s

---