Mediatek Gps Manual

[Kizzy Burnworth]

TheMT3620 is a Microsoft Azure Sphere MCU for a wide range of secure IoT applications. It features two general purpose ARM Cortex-M4 with FPU for I/O subsystems, which are designed to support real-time requirements when interfacing with a variety of on-chip peripherals including UART, I2C, SPI, I2S, and ADC. Being general-purpose processors means they can be tailored to specific application requirements. Meanwhile, on-chip peripherals may be mapped to any of the three end-user accessible cores, including the Cortex-A7.

The API reference manual is now available direct from our website, enabling developers to purchase development platforms direct from any of our hardware partners and use this open resource to start creating new solutions.

I currently own a Pavilion 14-n001tx, which has a Mediatek MT7630E 802.11 bgn 1x1 Wi-Fi + Bluetooth 4.0 Combo Adapter. The problem is that I have recently gotten an AC router, and am therefore looking to upgrade my wireless card. However, I have read that there might be a whitelist of cards that are approved by the BIOS?

As you can probably see, there are no AC capable cards here. However, I would like to ask if the whitelist is still applicable for newer devices, and whether it would be possible for me to replace my card with an dual band AC-capable one with Bluetooth as well?

I don't believe you would have any problem installing this model AC card in your notebook, assuming it has two wireless antennas connected to the present card (some model notebooks only have one antenna connected to single band cards).

While I cannot guarantee with 100% certainty that a card not listed in the service manual will work, I am pretty confident based on the hardware in your PC, and the fact that the Intel 7260 Wireless N card was offered as an option, that there is no BIOS whitelist in your notebook.

All wireless cards have two terminals to connect the antenas to, but on some notebook models, only one terminal has a wire connected to it. That would be a show-stopper as you would literally have to take the whole notebook apart including the display panel area to properly run a second antenna.

I tried replacing the WLAN module with a old BCM 4313 I had lying around, and it worked perfectly. This would definitely mean that the whielist has been removed on the Pavilion 14-n001tx. I will buy a 7260 AC chip, and confirm that it works here before i mark this thread as Solved.

If you converted yours to UBI, then the only way back from what I've been reading is though JTAG process. That's why I am holding off converting mine to UBI a bit to see to see if it becomes possible again to flash non-ubi builds. I would like to avoid the one way street UBI brings if necessary but if I want openwrt installed, I may have no choice.

On the other hand, I noticed that simply booting the router by tftp from the new recovery, it is not automatically written to the coresponding partition. I looked at what install.sh is doing and with these steps I updated the recovery:

I am not sure if I am the only one experiencing this issue, I see intermittent packet drops (5-10 packets) in the network and it's not just happening from one device. The issue is only affecting devices connected to wifi and not the through LAN. If I run a continuous ping to E8450 from different devices, I see packets getting dropped at different times. This doesn't happen when the devices are connected to the LAN and so it's something with the Wifi.

Absent fuller documentation or explanation, an understanding of the UBI layout / boot / recovery / installer aspects is surely beyond a significant proportion of the user base. For example, I am completely lost about the driver / error checking / calibration data / OEM reading / writing aspect.

What does that mean - 'just replace the recovery image'? I mean it obviously means replace the recovery image. But how do we do that? What is the recovery image actually? Are there two images on every device - one recovery and one full? Is the latter what sysupgrade is?

Am I back on the stock vendor's boot chain?

I previously updated uboot for newer openwrt version, does ubi0_3 got overwritten if i'm updating from a ubi to another ubi? (I was using 0.52 then i updated to 0.53 to use [openwrt/openwrt@050621a].

The second part from my message was about my experience with updating the ubi recovery (I said "on the other hand" ) and not related to the "back to factory" procedure. The original vendor flash layout is not ubi-based and does not include a so-called "recovery" partition, it is "dual-firmware".

There is an OpenWRT page explaining this:

What I've recommended after installing the factory bootchain, is to use the original factory firmware, rename it to lede-mediatek-mt7622-MTK-AX3200-MT7531-squashfs-sysupgrade.bin (I saw it in the U-Boot code) and serve it by tftp to the factory U-Boot. I am not sure if U-Boot will automatically load and flash this file or you need to use the serial console, this depends how it is programmed, it is just a hunch from my times debricking Atheros-based routers.

... that explains why he managed to boot the flashed UBI recovery.... unfortunately, if @indarkness does not have a previous backup of mtd0-3 in other place, it seems he lost the factory bootchain. I have the files from my RT3200 backup, do you think they can be used for his (another) router?

Probably the kernel has crashed while running production firmware which (deliberately) results in the bootloader booting into recovery until crash logs in /sys/fs/pstore have been removed.

Please check if you find anything there and if so, please post the content of the files and delete them from /sys/fs/pstore.

I finally got my Belkin RT3200. I like others cannot flash from the stock firmware. I am nervous about flashing the ubi version and not being able to return to stock. I have never used a serial cable before. Could someone link me to one that will work so that way I can return to stock if need be for testing purposes? I also want to get one in case I need to for some reason. Better safe than sorry I was always told.

Is there a guide on how to flash the ubi firmware? If so can someone link me to that? I am going to give it a shot. I want to make sure I have accurate information and up to date. I have been fallowing the discussion as much as I can but I have to admit 719 comments is a lot to read through as busy as I have been. When I go to install the ubi firmware will it create the necessary files for me to go back to stock with the serial cable?

I now there isn't a clear guide, but if you go the easy way of installing UBI with Daniel's method ( -e8450-openwrt-installer), you'll end with only the bootchain backup (factory partitions mtd0...mtd4) packed in mtd0, mtd1 and mtd2 files (here is the partition structure - and see how they match). If you want to have a backup of all factory partitions, according to the "manual" instructions from here =openwrt/openwrt.git;a=commit;h=02351861824a13ed158db1ef59aede2db6ba7568 you need to boot from the recovery image (NOT the installer). I don't know about the recovery capabilities of the original factory U-Boot and if can be used to debrick a router only by putting back the bootchain (factory mtd0, 1, 2, 3 - factory mtd4 was not affected in my case, that means only mtd0 and mtd1 are needed from the UBI backup) then serving the original firmware by tftp. If there is such method (like in atheros based routers) then you don't need a serial. But who is willing to experiment or enlighten us what are the capabilities of the original U-Boot?

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