"Can't init device, Reason: OCR Ready Timeout Error [Check VCC or eMMC DEAD]". - GSM-Forum

johnnybravo9889 · 12-30-2020, 16:08

Hello masters,
I am facing an issue in connecting almost every samsung device via isp, tried on 5_6 samsung devices , but always get the same error "Can't init device, Reason: OCR Ready Timeout Error [Check VCC or eMMC DEAD]".
Cross checked isp connection , tried hi power and without cable but always same issue . Is there any solution to this issue , should i try connecting 100 ohm resistance to data and 1.8v lines , will it affect my jtag plus box or is there any other solution for this problem.
Any kinda guidance is highly appreciated , please do help i have 5_6 samsung devices with same issue.
TY

layder · 01-02-2021, 15:02

read this

https://forum.gsmhosting.com/vbb/f67.../#post14298347

johnnybravo9889 · 01-02-2021, 17:35

Quote:

Originally Posted by layder

read this

https://forum.gsmhosting.com/vbb/f67.../#post14298347

My Apologies to master layder for drawing his attention to my issue again but after reading this thread i understood that i need good isp connection ( which i have ) and tried on classic suite and various version of emmc plus but still no good , may be it might be a co incidence that all these handsets have faulty/dead emmc .
Anyways thanks again for your support master :-)

layder · 01-03-2021, 12:17

it is very difficult to guarantee that the ISP connection will work on any device

The problem is that if the device is turned off, the power supplied to the eMMC also starts other chips of the device, and they can interfere with the signals going to the eMMC.

In the case of the HiPower CLK mode, the box also interferes with the fully functioning processor-memory bus.

To do this, you need to check the "HiPower CLK mode" checkbox in the software, which increases the signal power of the CLK, so that data synchronization between the box and the eMMC is possible.

Unfortunately, many users connecting a device powered by USB do not tick this box and write dozens of messages that nothing works for them.
Not to mention the fact that they use long wires of different length and not use told GND wire.

People do not understand the physics of the processes occurring in the wires, and at the same time do not fulfill the requirements for ISP connecting.

That's why there are constant the same questions on the forum, why the ISP connection is not working

12-30-2020, 16:08	#1 (permalink)
johnnybravo9889 Insane Poster Join Date: Sep 2018 Location: India Posts: 94 Member: 2868909 Status: Offline Thanks Meter: 36	"Can't init device, Reason: OCR Ready Timeout Error [Check VCC or eMMC DEAD]". Hello masters, I am facing an issue in connecting almost every samsung device via isp, tried on 5_6 samsung devices , but always get the same error "Can't init device, Reason: OCR Ready Timeout Error [Check VCC or eMMC DEAD]". Cross checked isp connection , tried hi power and without cable but always same issue . Is there any solution to this issue , should i try connecting 100 ohm resistance to data and 1.8v lines , will it affect my jtag plus box or is there any other solution for this problem. Any kinda guidance is highly appreciated , please do help i have 5_6 samsung devices with same issue. TY

01-02-2021, 15:02	#2 (permalink)
layder Product Supporter Join Date: Jun 2002 Location: Belarus Age: 47 Posts: 3,188 Member: 13148 Status: Offline Thanks Meter: 2,948	read this https://forum.gsmhosting.com/vbb/f67.../#post14298347

01-03-2021, 12:17	#4 (permalink)
layder Product Supporter Join Date: Jun 2002 Location: Belarus Age: 47 Posts: 3,188 Member: 13148 Status: Offline Thanks Meter: 2,948	it is very difficult to guarantee that the ISP connection will work on any device The problem is that if the device is turned off, the power supplied to the eMMC also starts other chips of the device, and they can interfere with the signals going to the eMMC. In the case of the HiPower CLK mode, the box also interferes with the fully functioning processor-memory bus. To do this, you need to check the "HiPower CLK mode" checkbox in the software, which increases the signal power of the CLK, so that data synchronization between the box and the eMMC is possible. Unfortunately, many users connecting a device powered by USB do not tick this box and write dozens of messages that nothing works for them. Not to mention the fact that they use long wires of different length and not use told GND wire. People do not understand the physics of the processes occurring in the wires, and at the same time do not fulfill the requirements for ISP connecting. That's why there are constant the same questions on the forum, why the ISP connection is not working