![]() The factory image I prepared will load the new UBoot along with OpentWRT so it's a one step painless process and the recommended method. With the Factory image it's easy to do the conversion/upgrade without soldering and it shouldn't take more than 10-15 minutes. In this case, you load the "Factory" image from the HooToo upgrade menu. In OpenWRT parlance a "Factory" image is the one you use to load OpenWRT on to the device for the first time while it's still running the manufacturer's original software. Since my initial upgrade, I have studied and now understand the factory HooToo upgrade images and that knowledge has enabled me to create OpenWRT "Factory" images that are compatible with the HooToo factory GUI software. I've found the in-circuit method to be much quicker and easier than TFTP most of the time. I use the "flashrom" app along with the TIAO Tumpa (USB Multi-Protocol Adapter), and one of these: … EBIDX%3AIT. I've discovered that the board is compatible with in-circuit programming of the flash chip using an external FLASH programmer which makes for easy debricking or upgrading of uboot. Again, the pads are on the edge of the board and marked.Ģ. The TM04 requires that you carefully remove the daughter board and then the three screws holding the base board in place. The pads or on the bottom of the board near the edge (see photos). Remove the bottom cover on the TM02 and carefully remove the board. Both devices can be gently pried apart with a very thin screwdriver. The connections are well marked and it's not difficult at all. If you plan on doing a lot of experimenting I recommending this as it's an invaluable tool for configuration, debug, and recover - as long as you can solder the connections without ruining the board. Also, having a serial console connection is very useful as a debug and recovery tool. ![]() If you have at least average soldering skills you can solder a 3v USBSerial cable to the board, setup a tftp server and replace it using tftp, then reboot and use that to burn the OpenWRT sysupgrade image to the correct MTD partition using tftp. There are several methods to replace UBoot:ġ. To install OpenWRT on the TM02 I ended up replacing the UBoot bootloader with a version compatible with the OpenWRT partitioning scheme. Unfortunately I received them only after I had already figured them out independently. They did include the GPIO driver sources and includes though which allowed me to verify that I had got the LED and switch assignments correct. Recently they finally made available a sanitized and seemingly incomplete set of sources on their website (now apparently removed) which I thank them for however there isn't much useful in them. I have been lobbying HooToo to comply with the GPL for a couple of months. ![]() Just a note, I'm not affiliated with HooToo in any way and developed this independently. Below are my latest upgrade instructions and how it all works but you'll need to go to the repository to get some of the files. All the files - patches, images, and board photos are over on github at … 02-OpenWRT. In the meantime, I want to share this with the community. (UPDATE: My patchs are now part of the trunk except for the "factory" image which you can get from my github repository - link below). ![]() I hope they'll eventually accept them and make this part of the trunk. I've submitted the patches to OpenWRT powers that be and haven't heard anything yet. All works well including the USB port.Īfter some bit of effort to learn how to add a new device to buildroot for trunk (all the wiki docs are for AA), discovering the gpio/led connections on the board, and understanding the HooToo upgrade image format so I could build a "factory" openwrt upgrade image, I've developed a set of patches and images. My patches (here and also in my github respository - link below) have support for both LEDs, the reset button and the slider switch. So far they've all worked well for me with just the chip antenna so I've found no need to modify them yet. An external antenna is easily installed as it has both a proper impedance matching RF front-end as well as a stripline bandpass filter on the board. The wifi works amazingly well considering it only has a chip antenna. The serial console connections are the 4 large pads on the bottom edge - they are marked. Feature set is nearly identical to the 703. It's also considerably smaller and a bit cheaper (I paid $18 free shipping Amazon prime. This is nice little unit with approximately the same functionality, about the same performance, and TWICE the amount of FLASH (8mb vs 4mb). See other updates and notes at the bottom of this post before using these instructions. This is the main thread for installing OpenWRT HooToo HT-TM02 and HT-TM04 micro-routers.
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