[Galaxy Tab Pro 12.2, 10.1, 8.4 Q&A, Help & Trouble] starbright_:
I was able to install to install

CF-Auto-Root-picassolte-picassoltexx-smt525.tar

At first I get this message I have often seen in bootloops, but than it installs the root.

Now I can check dmesg: I found a few things that are strange.

One is connecting to my wifi issue:

<4>[ 1.889065] wifi_set_power = 1
<6>[ 1.889070] ------------------------------------------------
<6>[ 1.889074] ------------------------------------------------
<6>[ 1.889079] brcm_wlan_power Enter: power on
<6>[ 1.889084] WL_REG_ON on-step : [0]
<6>[ 1.889092] WL_REG_ON on-step-2 : [1]
<4>[ 2.089258] wifi_set_carddetect = 1
<4>[ 2.089264] brcm_wifi_status:359 status 1
<6>[ 2.089269] mmc0: Slot status change detected (0 -> 1)

looks good so far, but than:

<6>[ 4.023471] smb358_hal_chg_get_property: slow-charging mode
<4>[ 4.089236]
<4>[ 4.089238] failed to power up wifi chip, retry again (4 left) **
<4>[ 4.089240]
<4>[ 4.105290] ## wifi_remove
<4>[ 4.105294] wifi_set_power = 0
<6>[ 4.105298] ------------------------------------------------
<6>[ 4.105302] ------------------------------------------------
<6>[ 4.105307] brcm_wlan_power Enter: power off
<6>[ 4.105312] WL_REG_ON off-step : [1]
<6>[ 4.105320] WL_REG_ON off-step-2 : [0]
<4>[ 4.209233] wifi_set_carddetect = 0
<4>[ 4.209237] brcm_wifi_status:359 status 0
<6>[ 4.209242] mmc0: Slot status change detected (1 -> 0)
<4>[ 4.209669] wifi_set_power = 1
<6>[ 4.209673] ------------------------------------------------
<6>[ 4.209677] ------------------------------------------------
<6>[ 4.209681] brcm_wlan_power Enter: power on
<6>[ 4.209686] WL_REG_ON on-step : [0]
<6>[ 4.209695] WL_REG_ON on-step-2 : [1]
<4>[ 4.419219] wifi_set_carddetect = 1
<4>[ 4.419224] brcm_wifi_status:359 status 1
<6>[ 4.419228] mmc0: Slot status change detected (0 -> 1)

and the other is:

<6>[ 0.036508] DMA: preallocated 256 KiB pool for atomic coherent allocations
<0>[ 0.038680] sec_debug_init: enable=0
<0>[ 0.038690] sec_debug_init: restart_reason : 0xfa00a65c
<4>[ 0.038702] ------------[ cut here ]------------
<4>[ 0.038726] WARNING: at /home/dpi/qb5_8814/workspace/PICASSOLTE_EUR_OPEN/android/kernel/mm/bootmem.c:581 alloc_arc
h_preferred_bootmem.isra.6+0x30/0x50()
<4>[ 0.038765] [<c010c4f8>] (unwind_backtrace+0x0/0x11c) from [<c0196434>] (warn_slowpath_common+0x48/0x60)
<4>[ 0.038788] [<c0196434>] (warn_slowpath_common+0x48/0x60) from [<c0196504>] (warn_slowpath_null+0x18/0x1c)
<4>[ 0.038812] [<c0196504>] (warn_slowpath_null+0x18/0x1c) from [<c0e15540>] (alloc_arch_preferred_bootmem.isra.6+0x3
0/0x50)
<4>[ 0.038836] [<c0e15540>] (alloc_arch_preferred_bootmem.isra.6+0x30/0x50) from [<c0e15b74>] (___alloc_bootmem_nopan
ic+0x30/0xd4)
<4>[ 0.038857] [<c0e15b74>] (___alloc_bootmem_nopanic+0x30/0xd4) from [<c0e15f70>] (__alloc_bootmem+0x10/0x20)
<4>[ 0.038879] [<c0e15f70>] (__alloc_bootmem+0x10/0x20) from [<c0e180d4>] (sec_avc_log_init+0x20/0x9c)
<4>[ 0.038899] [<c0e180d4>] (sec_avc_log_init+0x20/0x9c) from [<c0e0bf08>] (msm8974_init+0xc/0xa0)
<4>[ 0.038922] [<c0e0bf08>] (msm8974_init+0xc/0xa0) from [<c0e03778>] (customize_machine+0x1c/0x28)
<4>[ 0.038942] [<c0e03778>] (customize_machine+0x1c/0x28) from [<c0e00ca0>] (do_one_initcall+0x90/0x160)
<4>[ 0.038961] [<c0e00ca0>] (do_one_initcall+0x90/0x160) from [<c0e00e58>] (kernel_init+0xe8/0x1a4)
<4>[ 0.038985] [<c0e00e58>] (kernel_init+0xe8/0x1a4) from [<c010706c>] (kernel_thread_exit+0x0/0x8)
<4>[ 0.039017] ---[ end trace da227214a82491b7 ]---
<6>[ 0.039159] allocating 262152 bytes at ead80000 (40000000 physical) for avc log
<6>[ 0.039170] sec_avc_log_init: no old log found

I hope someone can help me to find out the reason for all that. Just not plugged or real defect hardware?