overclock antminer u2

overclocking antminer u2

i have antminer u2 i want 2 oc(overclock) it

so i bought the smd(surface mount resistors) of value 4.99k ohms and 10k ohms

i soldered them as per the overclocking guide of antminer u1

replaced resistor r1 which is 1k ohm with 4.99k ohm resistor

and resistor r2 is 10k ohm resistor

resistors size 0603 and tolerance +/- 0.1% from rscomponents website

soldered with little difficulty but got it well

when i tried running cgminer it says the frequency and keeps repeating

next time it returned 5 hardware errors and 3 shares accepted

what i observed is

its i better to oc the miner using software by providing --bmsc options

it shows less hardware errors with provided usb fan

try cooling with water it yields better results

check these links for more link1, link2

advice donot change resistors instead go for better cooling

BSNL Penta T-pad IS701R Software Upgrade

BSNL Penta T-pad IS701R Software Upgrade

The BSNL Penta TPAD IS701R is a powerful tablet solution at an unbelievably affordable price you may never have dreamt of! It comes with Android OS and high resolution 7” resistive touch screen powered by 1GHz (IMAP 210) processor and inbuilt DDR II 256M RAM It is best price performance tablet in their price range. You have all the controls in a single finger touch mode. Browse web on wireless or enjoy media playback on Penta TPAD IS701R. It supports 32GB memory on external memory card slot.

 If you have following problems with your BSNL Penta IS701R Tab:

• Wi-Fi not working
• Wi-Fi switching off and on its own
• Battery status not accurate
• Memory card not read by the device
• Device internal memory shows zero bytes
• BSNL and Penta logo appears and nothing happens (Device Hanging)
• Device stuck on Android logo
• Tablet not taking touch inputs correctly
• Forgot password

It could be resolved easily. Simply follow the instructions given below:

1. System Requirement: The computer must be installed with Windows XP. Remove all USB disks & make sure the tablet power is sufficient.
2. Download Software: The software and OS files which you will be using during the upgrade.

 Click here to download the software and OS files for IS701R with HDMI
Click here to download the software and OS files for IS701R without HDMI

3. Extract Folder: After extracting  zip file you will find two sub-folders “File 1” and “File 2”
4. File 1: Now open “File 1” folder. Click on IUWI.2 A new window will Open.
5. Insert Micro SD Card: Insert a micro SD card in a card reader and attach it to the system. Please make sure no other USB Disk’s (like pen drive, printer etc.) is attached to the system while following these instructions. Format the micro sd card with FAT type file system
6. Select Image Files of OS: In the window which you have got in the Step 4 where it says “Choose a wrapped image“ browse and open “File 2” and Select file “F117_android_1310721.ius”
7. Check for the Micro SD Card: If you have inserted a Micro SD Card. In the same window select your Micro SD Card “Choose an SD Drive”
8. Burn files to Micro SD Card: Then select “Boot Disk” from left pane and click on “Burn” at the bottom right.
9. Process Complete: When the process is complete, you will not see any File/Folder on the Micro SD Card. However the file is there. Next, remove the Micro SD Card.
10. Insert the Micro SD Card into the T-PAD: Now press the Power Button. The process will start automatically.

• Now Device will boot from SD card.
• Press the Back button which is located just below the camera at the right side.
• Follow the on screen instructions.
• A notification will appear & then Remove the Micro SD Card.
• The BSNL IS701R Android system will reboot.
• Follow on screen instructions to calibrate the touch screen.

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